When do density-dependent factors operate most strongly?

How many types of rock can form from the rock cycle

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells