Question

_______ and ________ are known as green house gases.

• A. Carbon dioxide
• B. methane

Answer 1

Greenhouse gas:

1. Gases responsible for the greenhouse effect are called greenhouse gases. For Example; carbon dioxide$\left({\mathrm{CO}}_2\right)$, methane$\left({\mathrm{CH}}_4\right)$, chlorofluorocarbons$\left(\mathrm{CFCs}\right)$, water vapor$\left({\mathrm{H}}_2\mathrm{O}\right)$, ozone$\left({\mathrm{O}}_3\right)$, etc.

• Greenhouse effect: The process in which the gases such as carbon dioxide$\left({\mathrm{CO}}_2\right)$, chlorofluorocarbons$\left(\mathrm{CFCs}\right)$, water vapor$\left({\mathrm{H}}_2\mathrm{O}\right)$, methane$\left({\mathrm{CH}}_4\right)$, and, ozone$\left({\mathrm{O}}_3\right)$ trap the heat radiations coming from the sun through space and prevent radiation from leaving the Earth's atmosphere completely into space resulting in the warming of the Earth's surface. This phenomenon is known as the greenhouse house effect.

2. Out of all the greenhouse gases, ${\mathrm{CO}}_2$ is present in major concentrations followed by${\mathrm{CH}}_4$.

Final answer: Carbon dioxide and methane are known as greenhouse gases.