Answer:
The electron transport chain is the third and final step of cellular respiration. At the end of the electron transport chain, the hydrogen from the coenzymes meets the oxygen which the cell has consumed and reacts with it to form water. Therefore, water is created as a byproduct of the metabolism reaction.
Answer:
scientific method
Explanation:
the process used to.observe and test hypothesis
An earthworm removes undigested food by either throwing it up, or getting rid of it from the other end. Hope I helped! ;-)