If you have a viral infection, why should you cover your mouth when you sneeze? * To prevent other people from breathing in the viruses you expel To prevent viruses from infecting cells in your nose and mouth To keep as many viruses as possible in your own body To get all of the cold viruses out of your body and onto your skin.

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.