Question

Choose the correct statement(s) from the following.

• A. The atmosphere consists of gases of uniform quality and quantity.
• B. Water vapour is a greenhouse gas.
• C. The abundant nitrogen in the atmosphere can be directly absorbed by the plants and animals.
• D. Gravitational force is not directly responsible for the concentration of atmosphere near the Earth's surface.

Answer 1

The correct option is B Water vapour is a greenhouse gas.

The atmosphere consists of various gases. The quality and quantity of these gases are not uniform. The atmosphere is concentrated near the Earth's surface due to the gravitational force of the Earth. Water vapour is considered as a gas, which contributes to the greenhouse effect. Nitrogen occupies 78% of the atmosphere. It cannot be absorbed directly by plants and animal.