Sleep and meditation are examples of
a. altered states of consciousness.
c. meditation.
b. circadian rhythms.
d. hallucinations.

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.

Amino acids are important to the body because they build carbohydrates proteins complex carbohydrates simple sugars fats

Me d: which system contains the heart, blood, and blood vessels? a. muscular b. circulatory c. respiratory d. digestive which system contains the pituitary, adrenal, and thyroid glands? a. respiratory b. circulatory c. endocrine d. reproductive