Which of the following molecules is NOT a polymer?
a.

starch

c.

glucose
b.

protein

d.

cellulose

Please select the best answer from the choices provided

A
B
C
D

In natural selection, what is actually “selected? ” a) alleles are directly selected b) genotypes are directly selected c) phenotypes are directly selected d) entire populations are directly selected

Number and variety of living organism; includes genetic, species, and ecological types

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .