Practicing what can prevent boredom and overuse injuries.

Describe some of the common health conditions associated with air pollution.

Ireally need to know this answer asap

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.