If an experiment fails to disprove a hypothesis, then?

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

What are the four basic classes of organic molecules how do they differ structurally and functionally

Liquid water turns into water vapor at which step in the water cycle