The following picture depicts a certain phenomenon.

(i) Name the phenomenon and explain it.

(ii) Enlist the sources that are responsible for the above mentioned phenomenon.

(iii) List out the effects of the above phenomenon on humans.

The picture below shows a campaign recently started by the Indian Government.

(i) When was this campaign launched ?

(ii) Mention the chief objectives of this campaign.

The figure given below shows a kind of pollution. Study the figure and answer the following questions.

(a) Define the kind of pollution shown here.

(b) Name two types of the kind of pollution shown here.

(c) Write two main sources of above mentioned pollution with one example each.

(d) Write two points to control the given pollution.

Study the figure shown here and answer the following questions.

(a) Identify the kind of pollution and define it.

(b) Mention four main sources of the pollution.

(c) Write two harmful effects of the above-mentioned pollution for the living organisms.