(Need help po please) Which of the following characterizes a tropical rainforest ecosystem?

l. It is located at the polar zones.
II. It has diverse plant and animal species III. It is situated in tropical places.
IV. It caters to few plants and animals.

A. I and Il
B. II and III
C. I and III
D. III and IV

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.