The antagonistic muscles.
o upper and lower back muscles
o hand and arm muscles
o foot and leg muscles
stomach and back muscles

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.

What can friends provide to affect mental health positively? a)peer pressureb)challengesc)conflictd)companionship

What advantage is the cell wall in relationship to osmotic pressure