Which of the following is the primary source of energy of in the ecosystem PRIMARY SOURCE OF ENERGY IN THE ECOSYSTEM Living things need energy to develop, inhale, recreate, and move. Energy cant be made from nothing, so it should be moved through the biological system. The essential wellspring of energy for pretty much every biological system on Earth is the sun . Essential makers use energy from the sun to create their own food as glucose, and afterward essential makers are eaten by essential customers who are thusly eaten by auxiliary buyers, etc, with the goal that energy streams from one trophic level, or level of the order of things, to the following. The most straightforward method for showing this energy stream is with a well established order of things. At the lower part of an established pecking order is consistently the essential maker. In earthbound environments most essential makers are plants, and in marine biological systems, most essential makers are phy...