Suck it good chew it then swallow sour patch kids? true or false?

How does fluid in the body become lymph? how is it returned to your blood

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.

How could you find out if that advice is based in scientific evidence?