Answer:
i would say A. Both are needed as a reactant of cellular respiration.
Explanation:
While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. ... Without oxygen, much less ATP would be produced.Aug 31, 2018
<span>b. chemistry, specifically the anions within the chemical formula</span>
Quantity of blood delivered to various parts of the body.