How does natural selection impact a gene pool?

In which way are mercury and venus similar? they both rotate from east to west. they are both small and rocky. they both have thick atmospheres. they both are similar to earth in structure.

Dan made the table shown to describe two different relationships between animals. organism interactions relationship a relationship b one organism lives inside the organism it feeds off no organism is harmed which of the following statements is most likely correct?

What term describes a doctor who becomes a specialist by meeting standards beyond those of getting a license and passing a test in the specialty area?