<span>The answer is D. It occurs continuously in the cells of all organisms and often involves an exchange of gases. There are 2 types of cells, 1 is Eukaryotic, which holds a nucleus, and the 2nd is Prokaryotic, which do not. Prokaryotes are single-celled organisms,</span>
Answer:
1. Carbon 2. valence level 3. Either solutes or solution 4.im not sure yet ill commment more answers in a second !!
Explanation:
