C) As hydrilla is aquatic in nature, the roots do not have to search for water, and there is no need for xylem to absorb water because the plant is surrounded by water.
Answer:
Asuming basic organic chemistry: Hydrocarbons
Explanation:
A hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.
Black skin to better absorb sun rays to help stay warm also fat/blubber to keep body temp warm/stable
