Question

5. Which of the following are not potential causes of global warming ?
(a) CO2
(b) Methane gas
(c) Contaminated water
(d) Depleted ozone laver​

Answer 1

Both depletion of the ozone layer and contaminated water are not potential causes of global warming

Explanation for correct option

(d) Depletion of ozone layer

(c) Contaminated water

• Depletion of Ozone later is a result of excessive use of chlorofloro carbons. Due to this ozone hole, unfiltered UV rays come to Earth and cause damage to human skin, etc. But this doesn't cause global warming.

• Contamination of water also doesn't contribute to global warming. Although it is one of the adverse effects of global warming.

Explanation for incorrect option

• CO2 is a potentail cause for global warming. Therefore, option a) is incorrect.

• Methane gas is also a potential cause for global warming. Hence, option b) is incorrect.