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Question

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Define pollution. Compare the biodegradable and nonbiodegradable pollutants.

Solution

Pollution. is any undesirable change in physical,chemical or biological characteristics of air, land, water or soil.

Differences between biodegradable and non-biodegradable pollutants

Biodegradable Pollutants

Non-biodegradable Pollutants

1. These wastes can be broken down into harmless substances by bacteria.

2. The disposal of biodegradable wastes is easy . Example. Cattle dung.

1. These cannot be broken down into harmless substances by bacteria.

2. Their disposal is not easy and is a major problem.

Example. D.D.T., Plastics.

Some More Questions From Environmental Issues Chapter

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Smog is a mixture of :

WHO’s recommendations about the industrial noise limit is of :

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The amount of dissolved oxygen required by the microorganisms to degrade the organic wastes present in water is called ?

The cause of acid rain is :

Which one of the following causes ozone depletion ?

What disease is caused due to consumption of fishes captured from water contaminated with mercury ?

Which one of the following is not a green-house gas ?

Which gas contributes the maximum in global warming ?

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