Question

Match the numbers with the gases.

• A. 1- carbon dioxide, 2- oxygen
• B. 1- oxygen​, 2- carbon dioxide
• C. 1- oxygen​, 2- carbon monoxide
• D. 1- ​carbon monoxide, 2- oxygen​

Answer 1

The correct option is A

1- carbon dioxide, 2- oxygen

Carbon dioxide and oxygen are the gases related to this figure because plants in forests release oxygen through the process of photosynthesis. This oxygen is used by animals for respiration. Plants consume carbon dioxide which is released by the animals. In this way, plants help in maintaining a balance of oxygen and carbon dioxide in atmosphere.