Which of these is/are true regarding atmosphere?
Which of these is/are true regarding atmosphere?
The correct options are
A It maintains the earth's temperature.
B It contains all the gases which are essential for sustaining life on the earth.
C It protects us from harmful UV rays.
D It helps us hear sound.
The atmosphere is essential for life because of the following reasons:
(i) It acts as a blanket and keeps the average temperature of the earth fairly steady by preventing a sudden increase in temperature during the day and slowing down the escape of heat into outer space during the night.
(ii) It contains all the gases which are essential for sustaining life on the earth.
(iii) Ozone layer present in the atmosphere prevents harmful UV rays from reaching the earth.
(iv) Winds are generated due to the movement of air present in the atmosphere, and rain and rainfall patterns are decided by these winds.
(v) The water cycle is not possible without atmosphere.
A
It maintains the earth's temperature.
B
It contains all the gases which are essential for sustaining life on the earth.
C
It protects us from harmful UV rays.
D
It helps us hear sound.
The atmosphere is essential for life because of the following reasons:
(i) It acts as a blanket and keeps the average temperature of the earth fairly steady by preventing a sudden increase in temperature during the day and slowing down the escape of heat into outer space during the night.
(ii) It contains all the gases which are essential for sustaining life on the earth.
(iii) Ozone layer present in the atmosphere prevents harmful UV rays from reaching the earth.
(iv) Winds are generated due to the movement of air present in the atmosphere, and rain and rainfall patterns are decided by these winds.
(v) The water cycle is not possible without atmosphere.
