The infrared radiation by sun are strongly absorbed by

carbon dioxide
water vapours
carbon dioxide and water vapours
ozone

The correct answer is C. carbon dioxide and water vapours.

Infrared radiation is a type of electromagnetic radiation with wavelengths longer than visible light. It is emitted by all objects with a temperature above absolute zero. The Earth’s atmosphere absorbs infrared radiation, which helps to keep the planet warm.

Carbon dioxide and water vapour are the two main greenhouse gases in the Earth’s atmosphere. They absorb infrared radiation and trap heat, which contributes to global warming.

Ozone is a gas that is found in the Earth’s stratosphere. It absorbs ultraviolet radiation from the sun, which helps to protect life on Earth. However, ozone can also be harmful to human health if it is inhaled in high concentrations.

In conclusion, the infrared radiation by sun are strongly absorbed by carbon dioxide and water vapours. These gases are the main greenhouse gases in the Earth’s atmosphere and they help to keep the planet warm.