Question

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1) Exhaust fumes cause a lot of .... especially in big cities.
a) recycling b) pollution.
2) Many unethical companies their waste into rivers.
a) dump b) give
3).... which is partly caused by exhaust fumes from cars, is a very big problem in many big cities across the world.
a) smog b) smoke
4)... rain occurs when pollution in the air is absorbed by water droplets in clouds.
a) dirty b) acid​

Answer 1

Ответ:                                                                                                                   1:Exhaust fumes cause a lot of b) pollution especially in big cities.

2:Many unethical companies a) dump their waste into rivers.

3:a) Smog which is partly caused by exhaust fumes from cars, is a very big problem in many big cities across the world.

4:b) Acid rain occurs when pollution in the air is absorbed by water  droplets in clouds.