Answer:
Hydrogen and part oxygen
Explanation:
Water is composed of these two which makes the symbol H20
It's Out Of C Or D Because It Explains It
<span>Trophic level—90% of energy consumed at trophic
level is used by the consumer for survival and reproduction. The remaining 10%
is transferred to the next trophic level. So the answer is 10,000 x 0.9
or 9,000 calories will be generally available
to primary consumer</span>
