Why does the right side of your heart contain oxygen poor blood on the left side contain oxygen rich blood

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

Give an example of a trait that is controlled by more than one gene.

Wich level of organization includes all the other levels or organizations