Which statement best describes the interdependence of photosynthesis and cellular respiration? A. The reactants of photosynthesis are sugar and oxygen to be used in cellular respiration B. The products of photosynthesis are carbon dioxide and water to be used in cellular respiration
C. The reactants of photosynthesis are the products of cellular respiration
D. The products are the same as the products of cellular respiration

What type of limiting factor affects a large population more then it affects a small population

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

This is so important ugh its 25 points