The electron transport chain is located on the inner membrane of the mitochondria, as shown below. The electron transport chain contains a number of electron carriers. These carriers take the electrons from NADH and FADH2, pass them down the chain of complexes and electron carriers, and ultimately produce ATP.
Biotic- living abiotic- non living
Biotic: sharks, corals, seaweed
Abiotic: water, the temperature of the water
