Environmental pollution

r insects that harm the crops. (a pesticide)
oo . . . is an illness which may cause death. (a cancer)
oo . . . means to spread widely in all directions by throwing. (to scatter)
5) Match each word with its correct definition:
Waste, noise, illness, smoke.
a) Used, damaged, or unwanted substance;
b) Unhealthy state of the body or mind;
c) Sound, especially unwanted or meaningless unmusical sound;
d) Usually white, grey, or black gas produced by things burning;
Key:
Waste - a), noise - c), illness - b), smoke - d).
6) Extend the sentences with the words given in brackets.
1) Polluted air can cause illness (and, death, even, badly).
2) They ruin beauty (rubbish, natural, scattering, by).
3) People damage the soil (fertilizers, with, many, too).
4) Factories provide jobs (people, for, goods, and, produce).
Key:
1) Badly polluted air can cause illness and even death.
2) They ruin natural beauty by scattering rubbish.
3) People damage the soil with too many fertilizers.
4) Factories provide jobs for people and produce goods.
7) Put the words in the sentences in order, the first word is in italics.
1) Can, highly, be, Radiation, dangerous.
2) Should, Governments, laws, enforce.
3) Should, Enterprises, activities, polluting, certain, reduce.
4) Can, Exposure, cause, large, to, amounts, cells, in, changes, harmful, reproductive.
Key:
1) Radiation can be highly dangerous.
2) Governments should enforce laws.
3) Enterprises should reduce certain polluting activities.
4) Exposure to large amounts can cause harmful changes in reproductive cells.
8) Make a sentence out of the two parts:
1) At present one of th