2: Organize the molecules in the correct order in which they occur in glycolysis and the Krebs cycle. -pryuvate
- H2O
-CO2
-glucose
- atp to adp

9. the history of life on earth is recorded in

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

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.