Wednesday, 16 November 2011

Worksheet 35

Activity:

Fill in the blanks with the correct answer.

1. When waste matter ( ) , poisonous and flammable gases are

released.

2. The microorganisms which disintegrate dead plants, animals and other organic waste are called ( ) .

3. The rubbish that is collected must be burnt in incinerators or placed

in ( ) .

4. Smoke and gases from factories cause ( ) pollution.

5. Air and water pollution can cause ( ) .


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