<span>Selection A is the most accurate. Nitrogen in the atmosphere cannot be used by most living things. For example, plants require nitrogen ions to function, and can only receive it through their roots. Atmospheric nitrogen does not provide an avenue for this uptake. Bacteria provide the nitrogen fixating needed for plants to be able to receive the proper form of nitrogen.</span>
Animals are affected by Natural Selection because Inherited characteristics affect their likelihood of survival and reproduction.
The continental drift affects living organisms in that it causes changes in climates which puts selective pressure on organisms, causes changes in habitats, including when large amounts of shallow marine habitat were lost in the formation of Pangea. Additionally continental drift may cause an increase or decrease in competition among different species and also it happens so slowly that it does not affect living organisms
