What is the main purpose of the organ system shown above?
a) receives stimuli, integrates information, and directs the body
b) transports nutrients, gases, hormones, and wastes through the body
c) provides support for the body and protects delicate internal organs
d) provides mobility and controls the movement of materials through some organs

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

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow