Which of the following will not allow the water cycle to occur if it were left out?
a. wildlife
b. fungi
c. glaciers
d. solar energy

d. solar energy

Explanation:

Solar energy is derived from the ultimate source of energy in our galaxy, the sun. Energy from the sun is responsible for all external processes that takes place on the surface of the earth.

The water cycle involves the movement of water on earth in various forms. Amount of solar energy in a particular place at a point in time determines different sections of the cycle. Without solar energy, the cycle will not occur.

mercury

explanation:

mercury is the least dense because of its size

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.