Most organisms on earth consist of a single cell. this means that most organisms on a. do not require nutrients for the majority of their life spans. b. cannot break food down through the process of digestion. c. can absorb food directly from their environment. d. have complex systems that transport nutrients to each cell.

1. -define adaptation2 explain darwin's theories of descent with modification and natural selection in detail3. -explain how each of these provides evidence for evolution: a. -fossil record, including superposition and transitional fossilsb-anatomy, including homologous structuresc-biological molecules, including dna and proteins4. -explain the difference between convergent and divergent evolution.5. -define and give three examples of artificial selection6. -define and give one example of coevolution.7. -explain biodiversity and how it benefits humans.8. -explain a type of population lest affected by environmental change.