Give the correct form of the words given to complete the sentences.
1.The ______________ of lakes, rivers, oceans or underwater CONTAMINATE
water pollution.
2. The street doesn’t look_____________ because it has a lot of rubbish.ATTRACT
3. The music club made so much noise that the__________ complained to REDIDE
its owner.
4. Are all types of pollution__________ to the health of humans and animals? HARM
5. The_____________ are concerned about the oil spills in East Sea. ENVIROMENT
6. Dumping ___________waste into the lakes and rivers has caused INDUSTRY
Serious water pollution.
7. Many people in this area have cholera because they drink _________water. TREAT
8.Examples of primary________________are exhaust fumes from cars, POLLUTE
soot from smoke and ash from volcanic eruption.
9. If we use water____________ , more people will have fresh water. CARE
10. The polluted water results in the _________of many aquatic animals DIE
And plants.
III. Combine the sentences in each pair into a new sentence that shows a cause/effect relationship. Use the words in brackets.
1.Many rivers and lakes are poisoned. Factories produce waste and pour it into rivers and lakes. (because)
___________________________________________________________________
2. The environment is polluted. Birds leave their habitats and plants die. (make)
___________________________________________________________________
3. Plastic bags are a major source of waste. We should not throw plastic bags everywhere. (so).
___________________________________________________________________
4. The food is contaminated. People’s health is poor. (results in)
___________________________________________________________________
5. Factories release fumes. The air breathe gets polluted. (due to)
___________________________________________________________________
IV. Combine each pair of sentences to form a conditional sentence, using “if” Type 2.
1.The factory is located near our village. There is air pollution and noise pollution.
___________________________________________________________________
2. The local people have to use water from the polluted river. They don’t have fresh water.
___________________________________________________________________
3. Trees and grasses cannot grow here. The soil is badly polluted.
___________________________________________________________________
4. Mr Quang works in a noisy environment. His hearing becomes worse.
___________________________________________________________________

Read the passage carefully. Then decide whether each is True or False

- People pollute the environment by throwing litter or garbage all over the places every day. They also dump empty bottles or cans into the rivers, lakes and seas, making the water unclean. They also cut a lot of trees to get wood pulp for making paper. To protect the environment , everyone should classify and put the garbage in a certain bag for making compost and they should recycle waste paper to avoid cutting a lot of trees. We can protect our environment by doing like that. We also should plant more and more green trees because trees help to hold the soil, prevent us from floods and give us fresh air and shade in summer.

True or False ????

1. One of the factors leading to the water pollution is bottles and cans dumped into the rivers.

2. We don't need to clarify garbage because It doesn't help protect the environment.

3. In oder to prodect our environment, we have to plant more trees.

4. Trees should not be cut down so as to prevent us from floods.

Questions :

5. We should NOT......... so as to protect environment.

a. Classify and put the garbage in a bag for making compost.

b. Cut lots of trees to get wood pulp instead of recycling waste paper.

c. Plant more green trees.

d. All the correct.

6. What does the word " Classify " in the passage mean ?

a. Arrange things in groups according to their features.

b. Throw things in different directions.

c. Bring things together.

d. Reduce something

Give correct form of the words in brackets:

1. Factories dump................ waste into lakes and rivers . (industry)

2. The .............. of water can make people and other animals die . (contaminate)

3.Households dump waste into the river so it is ................(pollute)

4.Since the parents were exposed to............. , their children have birth defects .(radioactive)

5. If we use water ............., more people will have fresh water.(care)

6. The.................. fish are floating in the water . (die)

7. Do you know what.............. cause air pollution? (pollute)

8. The river is .........................by the dumping from nearby factories.(contaminate)

9. Noise pollution can also lead to headaches and high blood..........................(press)

10. Dumping........................waste into the lakes and rivers has cause serious water pollution.(industry)

Saving the Environment: One Home at a Time

Pollution can be seen not only throughout the world, but also in our own homes. It comes from household chemicals, the amount of water people use and the waste people produce and throw away. What can be done to stop this pollution? Surprisingly, a person can help save the environment by doing simple things.

First, we need to recycle, which allows products to be used over and over again. Recycling can also reduce the number of trees cut down to produce paper products. It takes very little effort. It is not hard to place plastic and glass bottles, aluminum cans and paper in a bin. Anyone can do it.

Second, we need to watch the amount of water used at home. It can be conserved by taking short showers instead of baths, repairing leaky faucets, using the dishwasher or washing machine only when fully loaded, or simply turning the faucet off while brushing your teeth.

Third, we need to reduce waste. We need to recycle whenever possible, but shouldalso try to use this waste effectively. For example, grass clippings and food scraps can be made into compost for plants. The average person produces 4.3 pounds of waste every day, but we can reduce that amount by recycling and reusing.

If we do our part in our own homes, we can help keep the planet from becoming more polluted.

1. Pollution is caused from the following sources except .

A. water in rivers B. water from households

C.wastes D. house chemicals

2. Recycling can help us .

A. never cut down trees B. produce more paper products

C.place garbage bins easily D. use products again and again

3. In order to save water, we can do all of the following things except .

A. fully use the washing machine

B.repair leaky faucets

C. take short showers instead of baths

D.turn the faucet off while brushing your teeth

4. Recycling helps to reduce waste because .

A. plants need to develop

B.waste can be recycled and reused

C.a person can do it in his home

D.an average man produces compost for plants

5. The word “It” in paragraph 2 refers to .

A. cutting down B. the number

C. recycling D. effort

X. Read the passage carefully and do the tasks.
There are many kinds of pollution. Air, water, and land can be polluted. Some pollution is caused by
nature, such as foods, forest fires, and volcanoes. People are the major Cause of pollution. We pollute the
air with our cars, homes, and factories. Smoke from factories and car exhaust makes the air looks gray and
smoggy. Some people cannot go outside when the air is very bad! We pollute the water by dumping
garbage and Chemicals in the water. Plants and animals die because of the pollution in the water. We
pollute the soil with Chemicals and garbage. We harm the land by cutting down trees in the forest,
especially to build roads and new houses without careful planning and thinking.
The only way to save our environment is to think about pollution. How can you stop or limit pollution?
How do we protect our environment? Conservation is one way to protect our environment. Conservation is
the wise use and protection of our environment. We can control water pollution by not producing as much
as waste and by proper disposal of sewage and garbage. We can take care of recreation land by cleaning up,
after ourselves and not causing more pollution. Carpooling and public transportation will help reduce air
pollution.
Recycling is a type of conservation. Recycling is reusing items over again or in a new way. Recycling can
help us conserve our natural resources so they will last many more years. A. Find the word in bold in the
passage that means:
1. the protection of the natural environment ____
2. have a bad effect on something ____
3. a large amount of water covering an, area that usually dry ____
4. sharing a car ride with other people ____
5. waste gases that come out of an engine ____
6. the process of making air, water, soil, etc. dirty ____
7. get rid of ____
B. Choose the correct answers.
1. According to the passage, pollution________
A. is always caused by humans. B. can only be caused by nature.
C. is mainly caused by humans. D. may sometimes cause natural disasters.
2. What kind of pollution may a car cause?
A. Air pollution B. Water pollution C. Soil pollution D. Light pollution
3. Which of the followings is not an example of soil pollution?
A. Land development B. Waste disposal
C. Pesticide or fertilizer use D. Exhaust from traffic
4. How can we help save our environment?
A. Stop pollution. B. Dump garbage into the river.
C. Drive cars everywhere. D. Cut down trees in the forests.
5. How does recycling help the environment?
A. It expands landfills. B. It saves natural resources.
C. It increases water pollution. D. It causes air pollution.

6. What can we do to help reduce air pollution?
A. Walk or bike B. Carpool to work or school
C. Use public transport D. All of the above
7. What is the main idea of this article?
A.The air is dirty because of cars and factories. B. The soil gets polluted from littering.
C.People cause pollution, but they can also stop or limit it.
D. Conservation is the only way to stop environmental pollution.

One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial effluent which pours into the lake everyday. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world’s water surface. But it is the dumping ground for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles off shore.

Water is free to everyone. A few years ago people thought that the supply of clean water in the world was limitless. Today, many water supplies have been ruined by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something now.

1. According to the writer, one environmental problem in the world today is ________ .

A. acid rain B. industrial pollution.

C. safe water shortage. D. population explosion .

2. Many sources of water are not drinkable because of _______ .

A. acid rain. B. industrial pollution.

C. garbage D. all A, B, C, are correct

3. What is serious problem of Lake Baikal in Russia?

A. It contains a rich variety of animals and plants.

B. It is polluted by massive volumes of industrial wastes discharged into it .

C. It has 1,300 rare species that do not exist anywhere else in the world .

D. The government did not have the power to enforce laws and regulations.

4. How many countries throw industrial waste into the Mediterranean Sea regularly?

A. nearly 16 B. exactly 16.

C. exactly 15 D. less than 15.

5. What is the message to the reader?

A. We should take action to protect our water resources.

B. We should take all water resources into account.

C. We should limit the use of water resources.

D. We should encourage people to use safe water.

I.Choose the best answer.(A,B,C or D):

1.I like............back my home village on holiday.

A. comes B. come C.came D.coming

2.Iff the factory.... dumping poison into the lake , all the fish and other aquatic animals will die.

A.continues B.to continue C.continued D.will continue

3. Water.......in the lake has made the fish die.

A.pollution B.pollute C.polluted D.plluting

4.Mi and Nick like .......... back Mi's home village on holiday.

A.comes B.come C.came D. coming

5.If the factory continues dumping poison into the lake, all the fish and other aquatic animals........... .

A.die B. to die C.dead D.will die

6.Water pollution is the..... in the lake has made the fish die.

A.comtaminating B.contaminate C.contaminated D.contamination

7.If we .......... water carefully,more people will have fresh water.

A.will use B.would use C.using D.use

8.If the factory continues dumping poison......... the lake, all the fish and oother aquatic animals will die.

A.into B.to C.about D.in

II.Put the verbs in brackets into the correct form.(Câu điều kiện loại I)

1.If we(recycle)........ more, we will help the Earth.

2.Factories(not dump).....waste into rivers if the government fine them heavily.

3.If people travel to work by bus, there(be)..... fewer car fumes.

4.We(save).....thousands of trees if we don't waste paper.

5.If we use water carefully, more people(have)......fresh water.

6.If the factory(continue).......dumping poison into the lake , all the fish and other aquatic animals will die.

7.If we recycle more, we (help).......... the Earth.

8.Iff people(travel).......to work by bus , there will be fewer car fumes.

9.We save thousands of trees if we(not waste)......... don't waste paper.

10.Factories don't dump waste into rivers if the government(fine)..... them heavily.

IV.Put the verbs in brackets into the correct form.(Câu điều kiện loại II)

1.If I were you,I(look)..... for a new place to live.

2.If Lan wasn't ill, she(join).......out tree planying activity.

3.If there were fewer cars on the road, there(be)......less pollution.

4.If people really cared about the environment, they(not dump).......waste into the lake.

5.If there was no fresh water in the world, what(happen).........

6.If you(be).........the president,what would you do to help the environment?

7.They get sick so often.If they exercised more, they(be)........heathier.

8.If I(have)..........one million US dollars,I would build more parks in our city.

9.Quan's mother is unhappy.If Quan tided his room every day, his mother(not be)..........so upset.

10.There ín't a garden at house. If there were, we (grow)........... vegetables.

Ai giỏi Tiếng Anh thì giúp mk với ak!!!!!!

Mk đang cần 3 bài này rất gấp ạ !!!

Mk mong m.n giúp đỡ mk ạ

II. Fill in the blank of the following passage with ONE suitable word. Write your answer on your answer sheet.

There is much more water than land (1)___________ the surface of the earth. The sea and oceans (2)_____________ nearly four-fifths of the whole world, and only one-fifth of (3)__________ land. If you traveled over the earth (4)______ ________different directions, you would have to spend much more of your time (5)________________ on water than on roads or railways. We sometimes forget that (6)_______________ every mile of land there is four miles of water.

There is much water on the surface of our earth that we (7)______________ to use two words to describe. We use the word seas to (8)______________ those parts of water surface which (9)______________ only a few hundreds of miles wide, the word oceans to describe the huge areas of water which are thousands of miles wide (10)__________ very deep.

III. Read the following passage carefully and choose the best answer to each question. Identify your answer by writing the corresponding letter A, B, C or D on your answer sheet.

One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial effluent which pours into the lake everyday. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world’s water surface. But it is the dumping ground for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles off shore.

Water is free to everyone. A few years ago people thought that the supply of clean water in the world was limitless. Today, many water supplies have been ruined by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something now.

1. According to the writer, one environmental problem in the world today is ________ .

A. acid rain B. industrial pollution. C. safe water shortage. D. population explosion .

2. Many sources of water are not drinkable because of _______ .

A. acid rain. B. industrial pollution. C. garbage D. all A, B, C, are correct

3. What is serious problem of Lake Baikal in Russia?

A. It contains a rich variety of animals and plants.

B. It is polluted by massive volumes of industrial wastes discharged into it .

C. It has 1,300 rare species that do not exist anywhere else in the world .

D. The government did not have the power to enforce laws and regulations.

4. How many countries throw industrial waste into the Mediterranean Sea regularly?

A. nearly 16 B. exactly 16. C. exactly 15 D. less than 15.

5. What is the message to the reader?

A. We should take action to protect our water resources.

B. We should take all water resources into account.

C. We should limit the use of water resources.

D. We should encourage people to use safe water.

I. Choose the word whose underlined part is pronounced differently from the others.

1. A. disease B. dead C. treatment D. sneeze

2. A. environment B. billboard C. visual D. litter

3. A. birth B. thermal C. earth D. further

4. A. poisoned B. died C. dumped D. caused

5. A. contaminant B. waste C. illustrate

II. Choose the word whose main stress pattern is placed differently.

D. radiation

1. A. environment B. temperature C. botanical D. contaminant

2. A. untreated B. aquatic C. pollution D. electronic

3. A. pollute B. poison C. damage D. illustrate

4. A. presentation B. radioactive C. environmental D. contamination

5. A. permanent B. Chemical C. dramatic D. herbicide

III. Complete each sentence with an appropriate word. The first letter of each word is given.

1. The fish have died because the river water is heavily p________.

2. Health e________ from air pollution include lung cancer, and respiratory diseases.

3. Acid rain causes serious d________ to plants and trees.

4. If the air wasn’t dirty, Nick w________ sneeze so much.

5. The main gases that l________ to acid rain are sulfur dioxide and nitrogen dioxide.

6. There is a danger of serious contamination from radioactive w________.

7. Hundreds of d________ fish were found floating in the river near the factory.

8. U________ sewage can spread disease and contaminate drinking water sources.

IV. Choose the best answer A, B, C or D to complete the sentence.

1. After the accident, many people were exposed________ radiation.

A. from B. at C. to D. with

2. Light pollution has a wide range of negative effects________ I’m human health.

A. on B. of C. for D. to

3. ________can cause high blood pressure, heart problems, sleep disturbances, and hearing problems.

A. Air pollution B. Light pollution C. Water pollution D. Noise pollution

4. The levels of carbon dioxide in the atmosphere have risen________ the burning of fossil fuels.

A. therefore B. because C. in spite of D. due to

5. If rubbish is non-biodegradable, it________ forever.

A. exists B. will exist C. won’t exist D. doesn’t exist

6. ________are Chemicals that are used to kill unwanted plants, such as weeds.

A. Fertilizers B. Pesticides C. Herbicides D. Pollutants

7. There would be much less pollution________ people stopped using cars completely.

A. if B. since C. when D. although

8. Emissions of pollutants into the air can________ changes to the climate.

A. get on B. end up C. go into D. result in

9. ________can we help save our environment?

A. What B. How C. Why D. How much

10. If we care about plastic waste________.

A. why won’t we stop drinking bottled water? B. we would use reusable shopping bags C. we will

throw away plastic water bottles. D. why don’t we buy plastic bags?

V. Choose the underlined word or phrase, A, B, c or D that needs correcting.

1. What will happen if the Earth stopped moving?

A B C D

2. One of the things all of us can do to protect and improve our environment is recycle.

A B C D

3. Humans can even die if they will drink contaminated water.

A B C D

4. Long-term exposure to loud noise results permanent hearing loss.

A B C D

5. They believe that water pollution is the large cause of death and disease in the world.

A B C D

6. Is the recycling process in itself damaging for the environment?

A B C D

7. We won’t save the environment if we stop using so much energy.

A B C D

8. One in six species is at risk of extinction because climate change.

A B C D

9. The amount of waste decreased if people started to buy reusable packages.

A B C D

10. Contaminated water can cause of many types of diarrheal diseases, including cholera.

A B C D

VI. Write the correct tense or form of the verbs in brackets.

1. It would be better for the environment if more people________ (use) bikes rather than cars.

2. If we use less energy, we________ (help) reduce greenhouse gas emissions.

3. Every year, million tons of plastic________ (dump) into the oceans.

4. A thick smog________ (settle) over New Delhi since winter________ (begin).

5. Noise pollution can________ (cause) by vehicle, aircraft, and industrial noise.

6. Human activities________ (destroy) nature at an unacceptable rate right now.

7. A decade ago, WHO________ (classify) air pollution as a link to lung cancer.

8. If the temperature________ (increase) by a few degrees during the next few years, we________ (run

into) serious problems.

9. What________ (happen) if all the pollution in the world________ (disappear)?

10. At 8 o’clock last night, I________ (watch) “A Plastic Wave”, a documentary on plastic pollution.

11. We should avoid ________ (buy) frozen foods because their packaging is mostly plastic.

12. Air pollution can make people ________ (die).

VII. Supply the correct form of the words in brackets.

1. As an________ why do you oppose banning plastic bags? (environment)

2. The radiation leak has had a________ effect on the environment. (disaster)

3. The water supply is being tested for ________. (contaminate)

4. Heavy metals in________ water cut short millions of lives every year. (drink)

5. Scientists warn that plastic pollution in oceans will be one of the ________ threats. (big)

6. Pollution is the process of making parts of the living environment________. (dirt)

7. If thermal pollution continues for a long time, it can________ cause huge bacteria. (possible)

8. She became deaf after long-term________ to noise in the workplace. (expose)

9. Living near a busy road could cause high blood________. (press)

10. Wastewater________ a process used to remove contaminants from sewage. (treat)

VIII. Match the questions to the answers.

1. What is the main reason for thermal

pollution?

2. What effect does thermal pollution have

on aquatic animals?

3. How to minimize the water pollution due

to Chemicals?

4. What diseases are usually caused by air

pollution?

5. Which gas is mainly responsible for

global warming?

6. What are the effects of noise pollution? 7.

Why are plastic bags a big environmental

nuisance?

8. What are sources of radioactive pollution?

a. They are non-biodegradable and create an

environmental harzard.

b. Nuclear wastes from nuclear power plants,

mining and processing of nuclear material etc.

c. Carbon dioxide. It contributes about 55% to

global warming.

d. It affects their growth and may kill off them.

e. Hot water released by power plants and

industries.

f. Sleep disturbance, high blood pressure,

emotional problems and annoyance.

g. Rickets, throat cancer, lung cancer and

breathing problem.

h. Treat wastewater before discharging into a

flowing body of water.

IX. Choose the word which best fits each gap.

Many human activities over the last 200 years have been responsible (1) ________ polluting the air and

damaging people’s health. Automobile engines and power plants burn combustible (2) ________ like

gasoline and coal and allow toxic gases and smoke to escape into the air. Some pollutants destroy the ozone

layer, which is the thin blanket of gases that

(3) ________ Earth from the Sun’s dangerous ultraviolet rays. Other pollutants contribute to (4) ________

warming by adding to the planet’s natural greenhouse effect. Still others create acid rain, a phenomenon

that has disastrous (5) ________ on lake and forest habitats. Air pollution is not limited to industrial areas.

Depending on the direction of the wind and its force, air pollutants may (6) ________ spread to other

countries very far from the source of the pollution.

Big cities like Los Angeles and Mexico City are*often covered by smog, a fog that occurs (7) ________ air

pollution. In 1952, the City of London, England, was enveloped by smog so thick that people on the streets

had to feel their way around by (8) ________ the walls of buildings!

1. A. for B. of C. to D. with

2. A. chemicals B. means C. fuels D. matters

3. A. covers B. protects C. stops D. damages

4. A. environmental B. thermal C. temperature D. global

5. A. affects B. causes C. sources D. effects

6. A. never B. even C. ever D. hardly

7. A. because of B. in spite of C. instead of D. due of

8. A. climbing B. walking C. touching D. putting up

X. Read the passage carefully and do the tasks.

There are many kinds of pollution. Air, water, and land can be polluted. Some pollution is caused by

nature, such as foods, forest fires, and volcanoes. People are the major Cause of pollution. We pollute the

air with our cars, homes, and factories. Smoke from factories and car exhaust makes the air looks gray and

smoggy. Some people cannot go outside when the air is very bad! We pollute the water by dumping

garbage and Chemicals in the water. Plants and animals die because of the pollution in the water. We

pollute the soil with Chemicals and garbage. We harm the land by cutting down trees in the forest,

especially to build roads and new houses without careful planning and thinking.

The only way to save our environment is to think about pollution. How can you stop or limit pollution?

How do we protect our environment? Conservation is one way to protect our environment. Conservation is

the wise use and protection of our environment. We can control water pollution by not producing as much

as waste and by proper disposal of sewage and garbage. We can take care of recreation land by cleaning up,

after ourselves and not causing more pollution. Carpooling and public transportation will help reduce air

pollution.

Recycling is a type of conservation. Recycling is reusing items over again or in a new way. Recycling can

help us conserve our natural resources so they will last many more years. A. Find the word in bold in the

passage that means:

1. the protection of the natural environment ________

2. have a bad effect on something ________

3. a large amount of water covering an, area that usually dry ________

4. sharing a car ride with other people ________

5. waste gases that come out of an engine ________

6. the process of making air, water, soil, etc. dirty ________

7. get rid of ________

B. Choose the correct answers.

1. According to the passage, pollution________

A. is always caused by humans. B. can only be caused by nature.

C. is mainly caused by humans. D. may sometimes cause natural disasters.

2. What kind of pollution may a car cause?

A. Air pollution B. Water pollution C. Soil pollution D. Light pollution

3. Which of the followings is not an example of soil pollution?

A. Land development B. Waste disposal

C. Pesticide or fertilizer use D. Exhaust from traffic

4. How can we help save our environment?

A. Stop pollution. B. Dump garbage into the river.

C. Drive cars everywhere. D. Cut down trees in the forests.

5. How does recycling help the environment?

A. It expands landfills. B. It saves natural resources.

C. It increases water pollution. D. It causes air pollution.

6. What can we do to help reduce air pollution?

A. Walk or bike B. Carpool to work or school

C. Use public transport D. All of the above

7. What is the main idea of this article?

A.The air is dirty because of cars and factories. B. The soil gets polluted from littering.

C.People cause pollution, but they can also stop or limit it.

D. Conservation is the only way to stop environmental pollution.

XI. Joining two sentences, using the words in brackets.

1. We must conserve water. Otherwise we will face serious water shortages. (IF)

____________________________________________________________________

2. The weather was awful. We didn’t enjoy our camping holiday. (BECAUSE OF)

____________________________________________________________________

3. Plastic bags are non-biodegradable. They will remain in the environment for many years.

(SINCE)

____________________________________________________________________

4. Paul doesn’t think about the planet. He wastes so much water. (IF)

____________________________________________________________________

5. Water pollution happens. Many aquatic animals such as fish can die. (LEAD)

____________________________________________________________________

6. The climate is changing. The earth is getting warmer. (BECAUSE)

____________________________________________________________________

7. We should stop cutting down so many trees. We endanger our oxygen supply. (UNLESS)

____________________________________________________________________

8. People begin to recycle. They generate much less trash. (WHEN)

____________________________________________________________________

9. We are damaging the ozone layer. The ozone layer is necessary for human existence.

(EVEN THOUGH)

____________________________________________________________________

10. Sue is suffering from skin cancer. She was exposed to radiation when she was young. (SO)

____________________________________________________________________