Which of these BEST describes the benefit of variation within a species?
Select one:

It is energetically inexpensive for organisms to maintain.

It occurs even among organisms that are isolated from other organisms

It allows most organisms to find appropriate mates.

It ensures some organisms can survive an environmental change.

Which step if the scientific method relies more heavily on newly collected data than on creativity and innovation

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels