True or false individuals evolve by developing traits that are better for survival and reproduction

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.

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

What did hunter gathers do to alter the environment?