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These gases pollute the atmosphere of towns and cities.A.airB.waterC.earthD.feeling
These gases pollute the atmosphere of towns and cities.
A.air
B.water
C.earth
D.feeling
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These gases pollute the atmosphere of towns and cities.
A.air
B.water
C.earth
D.feeling
A.Because they pollute air.
B.Because they are natural hazards.
C.Because they are increasing in numbers.
D.Because people don't walk so often.
If people don't stop smoking, they will ______.
A. pollute the air
B. waste a lot of money
C. become stupid
D. be in poor health
One of the ______ of this method is that it saves a lot of fuel and doesn't pollute air.
A.interests
B.benefits
C.profits
D.advantages
Dumped waste might contaminate water supplies.
A destroy
B decrease
C delay
D pollute
A.They are cheaper.
B.They do not pollute as much.
C.They are simpler to drive.
D.They are faster.
Which is not said that can pollute our air?
A.Smoke from our homes.
B.Smoke from buses.
C.Smoke from trucks.
Environmental engineers' work is to
A.design new kind of cars, buses and trucks that will not pollute the air
B.protect the environment
C.produce cars that will not pollute the air
11 Dumped waste might contaminate water supplies.
A destroy B decrease C pollute D delay