Because 5- to 7-year-olds' gross-motor skills are not fully developed, which of the following sports would be most appropriate?

Only the ____ receives manipulation in an experimental study. a. non-experimental group c. control group b. experimental group d. experimental design group

Fill in the blank(s) with correct word

An action potential occurs when the inside of a cell becomes more __________ charged and the __________ charge moves down the axon

a) negatively; electrical b) positively; electrical c) negatively; chemical d) positively; chemical