they are essential to its health. As dead wood is decomposed it aids new plant growth by returning important nutrients to the ecosystem.
False. Amphibians like frogs reproduce sexually like mammals. Where's organisms like the hydra reproduce by budding and organisms like the sea anemone, use water to carry their sperm and eggs.
I believe that the best answer to this question is d. amino acids.
D an ecological footprint
An animal cell that is placed in a hypotonic solution will rapidly gain water, because osmosis would cause the water to move to an area with more solutes. In this case, that is the inside of the cell. A cell in a hypotonic solution may gain enough water to lyse, or rupture, the cell membrane, which destroys the cell.