The ultimate energy source for food production for most life on earth is
A) the atmosphere.
B) the soil.
C) autotrophs.
D) the sun.
E) heterotrophs.

Question

Quizplus · Accepted Answer

The sun is the ultimate energy source for most life on earth as it provides the energy necessary for photosynthesis in autotrophs, which are the primary producers that form the base of most food webs. Without the sun, there would be no energy input into ecosystems, and life as we know it would not be possible.

The Ultimate Energy Source for Food Production for Most Life