The site where hematopoiesis occurs is the: a. capillaries b. bone marrow c. cartilage d. liver e. periosteum

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

Nucleic acids offer variability because they contain alternate forms of genes called .

Which describes the changes in the earths motion?