In which case will a sound wave travel the fastest ?

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.

Match the types of competition to their descriptions

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.