Answer: B: the variety of living things on Earth.
(Biodiversity refers to every living thing, including plants, bacteria, animals, and humans.)
I think it would be D a pure substance
Because for each glucose molecule there are two pyruvic acid molecules entering the system, two ATP molecules are formed. Also during the Krebs cycle<span>, the two carbon atoms of acetyl-CoA are released, and each forms a carbon dioxide molecule.</span>
The last one (d) I think it is the correct one
