Question

Define air pollution and write its four effects on environment.

Answer 1

Air pollution: Air is formed by nitrogen, Oxygen and carbon dioxide mixing together in a certain fixed proportion. A change in this proportion leads to air pollution.

Effects of Air pollution: Air pollution causes the following effects on human beings, vegetation and substances-

(1) Effects of nitrogen oxide: Inflammation of the tissues of lungs, causing lung cancer and pneumonia, diminishing the oxygen carrying capacity to different parts of the body. Concentrated nitrogen oxide causes burning sensation in the yes. It also weakness the immunity system.

(2) Effects of Sulphur dioxide: Burning in eyes, phlegm and cough, headache and diseases like asthma.

(3) Effects of carbon monoxide: Headache, vomiting, dozing, difficulty in breathing, muscullar weakness and diminishing of the ability of carrying oxygen to the cells of lungs.

(4) Effect of agricultural activities: Skin allergy because of pollen grains, diarrhoea, headache difficulty in breathing and muscular lethargy.

(5) Effects on seasons: Different polluting substances affect the formation of clouds and the temperature. Their excretion from industrial factories also affects the formation of clouds. This may result in acid rains.