-is a measure of the distance an object travels per unit of time

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.

Which of the following choices are the fat soluble vitamin? a) c b) b6 c) d d) calcium

In this model, what do p, s, and a bases represent?