Rods and cones synapse with cells, which then synapse with cells.

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.

Which image shows labeled organelles that are present only in plant cells?

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria