Hey please help ?​

What drives an advertising campaign?

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

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.