Which characteristic was true of Mendel’s F1 generation plants?

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.

How does the human body lever work?

The diagram shows a chicken embryo and a human embryo