Identify the four postulates of natural selection. select all that apply. view available hint(s) select all that apply. individuals in a population all possess the same traits. some trait differences are heritable. survival and reproductive success are variable among individuals in a population. all individuals in a population have equal reproductive success. individuals with certain traits are more likely to survive and reproduce. individuals in a population vary in the traits they possess.

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.