Q6 of 20 Page 61

Answer the following

Construct two slogans each on air, water, and soil pollution.

Slogans on air pollution

1. Keep air clean, for that you breathe.


2. Clean air leads to a healthy you.


Slogans on water pollution:


1. Contamination of clean water is a health hazard.


2. Industrial pollution of water should be stopped.


Slogans on soil pollution:


1. Garbage dumping in the open is a crime.


2. No soil pollution, healthy crops.


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6

Answer the following

Suggest four preventive measures for air pollution.

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Answer the following

Explain the relation between green house effect and global warming.

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Classify the following pollutants into natural and manmade categories. Sewage, dust, pollen grains, chemical fertilizers, vehicular smoke, algae, pesticides, waste of animals and birds.

 1

Visit the water testing laboratory in your area and collect the information about tests for checking the purity of water.