The ecosystem of a lake includes

a. only the water and the soil.
b. the plants, fish, water, insects, sun, and soil.
c. only the fish, insects, and other living animals.

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.

Actual age your first developed of age well comparison age refers to absolute age true or false