A
A is correct for this problem
D because they are complete systems
Answer:
Chemical energy stored in glucose
Explanation:
I believe the correct answer is natural selection.
Natural competition and the fight for “survival of the fittest” is what pushes diversity the most.
Answer:
Hydrosphere
Explanation:
The wording is quite confusing but if you are talking about the 'spheres' of earth's bio-systems, then the answer should be: The part of Earth that is liquid water is called the <em>Hydrosphere</em>
