Studies of populations that reveal correlations between dietary habits and disease incidence are epidemiological studies.
<span>Bacterial genome is prone to mutational changes due to its simple nature and less efficient DNA repair mechanisms compared to humans, thus it has more chances of obtaining new genetic traits.</span>
I think C) availability of water is your best answer because alot of organisms count on water as a major resource because they need it to survive so a lack or a gain in the amount of water will majorly effect an ecosystem.
CO2molecule is a reactant in the first step and a final product in the fourth step of the Calvin-benson
