In genetic drift, the allele frequencies in a gene pool change because of
a. mutations.
b. chance.
c. natural selection.
d. genetic equilibrium.

Four types of motile cells in human body?

What kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid

Study the picture of the ocean. which is the best example of an organism’s niche shown in the picture? a. the environment contains several of the same species of coral. b. the shallow area of the ocean meets the needs of the coral and the fish. c. the ocean has fish and coral that live in the same area. d. the coral take in food from the water and provide shelter for the fish.