Answer:
adaptive and increase fitness and according to their age and abilities they do according to it
I believe the answer is: scarcity and opportunity costs
A concert tend to happen on unpredicatble time, which make it considered to be scarce among fans. When we are forced to choose between going to concert or study, we would be forced to weigh the opportunity cost that arise when we sacrifice a certain option to pursue another, and choose the activity that give us the most benefit.
Social change mainly deals with like population shift and stuff like that.
Answer:
B
Explanation:
People do good things when people are watching i hope this is right :)
