HOW IS THE ENVIRONMENT POLLUTED?

1) Exhaust fumes cause a lot of                                  [a) recycling, b) poll], especially in big cities.

2) Everyone should learn to                                    [a) conserve, b) converse](= save) energy. Using lights / lamps only when needed is a good way to do this.

3) Nancy is                                   [a) cornered, b) concerned] about pollution. This is why she walks to work instead of driving.

4)        [baking, biking] is much healthier than driving, and it doesn’t pollute the air.

5) David conserves water by not letting it     [run, jog] when he’s not using it.

6) I’d like to conserve water         [bath, shower] But I feel dirty if I don’t ... three times a day!

7) Many unethical companies      [dump, give] their waste into rivers.

8)       [smog, smoke], which is partly caused by exhaust fumes from cars, is a very big problem in many big cities across the world.

9)       [dirty, acid] rain occurs when pollution in the air is absorbed by water droplets in clouds.

10) Oil        [soil, spills] pollute sea water and kill marine life.