What happens in a young tuna’s life cycle?

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 statements describe a host organism?

How can you approximate the number of calories required to keep you in energy balance?