Question

there is a normal distribution of traits seen in natural selection, where the medium trait is favored. however, the distribution of traits is altered when factors in the environment change and influence natural selection. these environmental factors alter the selection of traits passed to generations and can have an effect on the biodiversity on earth. which of the following explains biodiversity? the total number of organisms on earth the total variety of organisms on earth the total size of organisms on earth done

Explanation:

Biodiversity refers to the variety of life forms, including species, genetic, and ecosystem diversity. The first option is about the total number (which is population size, not biodiversity), the third about size (irrelevant to biodiversity). The second option, "the total variety of organisms on Earth", matches the definition of biodiversity.

Answer:

the total variety of organisms on Earth