A Social Studies instructor provides a piece of candy each time a student responds to a question. At the start of the school year, this incentive works well, and many students answer questions more often. By the middle of the school year however, the candy reward no longer has the same effect of increasing student response. Which principle of conditioning is at play in this classroom

in an effort to stem the tide of refugees attempting to leave east berlin, the communist government of east germany begins building the berlin wall to divide east and west berlin. construction of the wall caused a short-term crisis in u.s.-soviet bloc relations, and the wall itself came to symbolize the cold war.

colony: virginia

1: 1607,john smith

2: british were looking for gold and land

3: near oceans and theres forests

4: fishing? ithink

5: sometimes

yes he did writing dots to make the answer