The spongy material in the center of hollow bones is bone marrow.

true
false

Describe the overall function of the nervous system

Practice or pre-exercise theories of play pose the idea that a. play provides children with an opportunity to practice adult activities. b. play is necessary to reenergize human cognition. c. children have too much energy and play will rid them of that energy. d. children are the link between animals and human beings.

Describe the potential effects, on people, of unprotected exposure to the sun. give an example of 1 new thing have you learned about the sun’s uv rays.