Solar collectors are parts of . a. passive solar heating systems b. active solar heating systems c. internal combustion engines d. external combustion engines

Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement

True or false graphs must include scales that increase by the same amount

What does si stand for,when referring to a system of measurement