Question

Select the correct statements amongst the following
(i) Acid rain does not harm plants.
(ii) Increased amount of chlorofluorocarbons leads to the depletion of ozone layer.
(iii) Combustion is the burning of wood.
(iv) Over-grazing decreases the chances of soil erosion.

• A. (i) and (iv)
• B. (ii) and (iv)
• C. (i) and (iii)
• D. (ii) and (iii)

Answer 1

The correct option is D (ii) and (iii)

Acid rain removes nutrients and minerals from the soil, thus affecting growth of plants. Overgrazing leads to soil erosion as it removes the plants that cover the top soil rich in humus and nutrients, thereby exposing the soil to wind and water erosion. The increased amount of chlorofluorocarbons leads to the depletion of the ozone layer by breaking ozone molecules and combustion is the burning of wood, organic residues and fossil fuels.