Which of the following is a measure being taken to prevent the extinction of the leatherback sea turtle? building condominiums on beach front property fishing by trawling captive breeding placing chemical light sticks on fishing line

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.