The Earth’s orbit is slightly elliptical, at some points, it is closer to the sun than others, does this have an effect on the seasons?

Albinism is an inherited genetic disorder. explain what it is meant by inherited genetic disorder

How does secondary succession differ from primary succession?

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.