How do oil spills affect marine ecosystems? a) oil has nutrients that are useful for marine plants. b) this has no lasting effect, as the oil evaporates in a few days. c) marine animals absorb the oil through their skins and store it as fat. d) marine organisms die because oil stops oxygen from entering the water. hint : oil floats on water.

The answer is D) Marine organisms die because oil stops oxygen from entering the water.

Explanation:

The oil spill results in the death of many marine beings, due to the contaminants of the oil compounds that are tremendously toxic. Due to the oil film, the oxygen content in the water is reduced, which causes the asphyxiation of the fish, since they need oxygen to live, which comes from the water, that by the gills, retains the present oxygen and distributes it through the circulatory system through the body.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.