Question

hello you why is the atmosphere essential for life​

Answer 1

Atmosphere is very important for sustaining life: It contains various gases like O2, CO2, N2 which are required for various life processes by plants and animals. (ii) gas is used by plants to prepare food by the process called photosynthesis (iii) Oxygen is required for burning, combustion and respiration.

Answer 2

The importance of the atmosphere is as follows:
(i)The atmosphere protects the Earth from the solar radiation. It filters the harmful ultraviolet rays of the Sun.
(ii)The atmosphere traps the required heat of the Sun and allows the rest to escape into space, thus maintaining a moderate temperature on the Earth. This ensures the existence of various life forms.
(iii)Due to the friction created in the atmosphere, many meteors and meteorites get burned in the atmosphere, which would have otherwise fallen on to the surface of the Earth.
(iv)Because of the difference in the temperature of the atmosphere, air gets circulated causing winds and the rains. All forms of life depend on these phenomena.
(v)Soil absorbs nitrogen and oxygen which is present in the atmosphere. This helps plants to grow.
(vi)The water cycle takes place due to the processes of evaporation, condensation and precipitation. Water vapour, which is a part of the atmosphere, condenses to form clouds resulting in rainfall.