Using the rule of 10 percent in energy transfer, how much energy would be available at secondary consumer level if your producer level had 3,500,000 kilocalories of energy/area?

5
question 3 options:

1,750,000 kcal/area

350,000 kcal/area0

175,000 kcal/area

35,000 kcal/area

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.