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(b) Which of the following is a cause of air pollution?

(i) burning wood, coal, or oil
(ii) blaring sound of horns
(iii) dumping of industrial wastewater into water bodies

(c) River Damodar flows through:

(i) West Bengal
(ii) Uttar Pradesh
(iii) Telangana

(d) Lead, mercury, fluoride, and _______ are the greatest threats to human health.

(i) iron
(ii) cadmium
(iii) calcium

(e) Which of the following is not a possible source of manmade radioactive contamination of the atmosphere?

(i) the production of nuclear fuel
(ii) testing of nuclear weapons
(iii) nearness to the aerodromes



Answer :

GinnyAnswer

Final answer:

Air pollution is caused by burning fossil fuels, industrial activities, agricultural operations, and natural events like volcanic eruptions and forest fires.


Explanation:

Air pollution is caused by various sources including the burning of fossil fuels, such as wood, coal, and oil, contributing to chemical substances and particles in the atmosphere. Other causes include industrial activities like dumping of industrial wastewater into water bodies and agricultural sources from operations involving animals and crops. Natural sources like volcanic eruptions and forest fires also contribute to air pollution.


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