During early childhood, children's body proportions change. Their heads become ________ compared to the rest of their bodies

On what type of reinforcement schedule would you receive 5 points for every 10 vocabulary words you learn?

a) fixed-ratio 5 b) fixed-ratio 10 c) variable-ratio 5 d) variable-ratio 10

Free nerve endings all contain:

a. CLK families of receptor binding sites b. TRP families of protein ion channels c. The same receptor binding site d. The same protein ion channel