Question

Balance between oxygen and carbon dioxide in atmosphere is depicted through the following diagram. Match the numbers with the correct gas name.

9

• 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 releases 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.