Genes contain paired sequences of chemicals called ____

Russell needs more of the drug he has been using to get the normal high he got when he first started. Russell is experiencing _______________

a) drug tolerance b) drug detoxification c) withdrawal d) overdrawal

At 12 months old, Will is able to demonstrate which of the following fine motor skills?

brush his own teeth draw a straight line on paper build a tower of 3 to 4 blocks feed himself with a spoon