This relates because at first the human species are vulnerable to the new disease but as natural selection in human evolution occurs the human species will be able to overcome the disease and become invulnerable.
Answer:
Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.
Reproduction is not necessary but is essential in keeping the generations of species going.<span />
Answer:
Proteins are broken down by the enzymes pepsin and peptidase, and by hydrochloric acid. Lipids are broken down by lipases.