The most abundant fossil fuel is coal... Coal isn't only our most abundant fossil fuel,it's also the one with perhaps the longest history. The U.S. has more coal reserves than any other country in the world. In fact, one-fourth of the all the known coal in the world is in the U.S.
<u>Answer:</u>
<em>Energy is left behind the food chain starting with one trophic level then onto the next. </em>
In any case, just around 10 percent of the complete energy put away in living beings at one trophic level is really moved to <em>living beings at the following trophic level. </em>
The remainder of the energy is utilized for metabolic procedures or lost to nature as warmth. Energy that isn't utilized in a <em>biological system</em> is in the end lost as warmth.
<em>Energy and supplements are gone around through the food chain, when one creature eats another life form.</em>
