Question

The WHO defines air pollution as substances put into the air by the human activities into concentrations

sufficient to cause ................... effects to health, crop yield or to interfere with the enjoyment of property.
(A) healthy

(B) harmful

(C) both harmful and harmless

(D) proud​

Answer 1

Answer:

harmful

Explanation:

Answer 2

Air pollution cause (B) Harmful effects to health.

Explanation:

• Air pollution is directly affect the lungs of human beings and also affect the animals . This may cause lung cancer and damage the tissues in body .
• Air pollution is caused by these contaminants ozone, carbon monoxide, chlorofluorocarbons and many other toxic gases which comes from industries and from electrical appliances. by increases the use of industries and these new electrical appliances like ACs, refrigerators etc day by day our Air pollution is increases rapidly and harm our health and environment both.
• Due to this contaminated air our ozone layer is also starts to depletion and this can cause more to our health or on the skin because of direct exposure of UV radiations from sun.

In this way we can say Air pollution not only effects our health but also effects the environment .