What process in the mitochondrion provides the electron transport chain in cellular
respiration with the energy it needs to
function?

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins

How does climate change affect producers?