What might scientists learn about the evolution of human behavior from studying cognitive behavior in animals?

Which of the four major uses is predicted to change the least by 2020?

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.