Roger went on a diet a few months before wrestling season. through careful eating and daily exercise, he lost eight pounds of fat in two months. what happened to the "weight" or biomass that roger lost? a) it was converted into atp molecules. b) it was converted to new food, c) it was excreted as bodily waste products. d) it was released as carbon dioxide and water. eliminate

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.