Question

Terrestrial life would become impossible with

• A. Disappearance of moon
• B. Decrease in mean annual temperature by ${10}^{o}C$
• C. Change in orbit of earth
• D. Change in atmosphere permitting all solar radiations to reach lithosphere

Answer 1

The correct option is D Change in atmosphere permitting all solar radiations to reach lithosphere

The total amount of solar radiation reaching to the lithosphere do not enter the surface of the earth as it would heat up the earth making it unsuitable for any life. Therefore, 35% of the solar radiation are reflected back to the space.

So, the correct answer is option D.