Pls ! brainliest to first right answer
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?
a) the total number of organisms on earth
b) the total variety of organisms on earth
c) the total size of organisms on earth

The right option is; B) the total variety of organisms on Earth

The total variety of organisms on Earth explains biodiversity

Biodiversity is the variety and variability of all species (different plants, animals and microorganisms) from all sources (marine, terrestrial and other aquatic ecosystem) on earth or within a particular region. Biodiversity involves genetic diversity, species diversity and ecosystem diversity which all functions together to form the complexity of life on earth.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms