72. With reference to the Earth's atmosphere, which one of the following statements is correct?
a. The total amount of insolation received at the equator is roughly about 10 times of that received at the poles.
b. Infrared rays constitute roughly two-thirds of insolation.
c. Infrared waves are largely absorbed by water vapor concentration in the atmosphere. that is the lower.
d. Infrared waves are a part of the visible spectrum of electromagnetic waves of solar radiation
iAspirants