The process by which dead leaves, stems and fruits decompose into humus and nutrients taken up by plant roots is referred to as​

Works together in the synthesis, modification, packaging, and transport of lipids and proteins

Which process of living things produces water that enters the water cycle

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.