Answer:The historian's primary source is evidence from the past
Explanation:
The historian's primary source is evidence from the past. A secondary source uses evidence from primary sources to try to figure out the past. The historian's dream is to find fresh evidence from the past and, from that evidence, to create a fresh interpretation of history.
In a prisoner's dilemma, the type of behavior that provides the most benefit for each individual is to cooperate.
If the prisoners cooperate, it means that the police won't have enough proof against these criminals given that they will give the same account of what actually happened. Instead of remaining silent, confessing, or betraying each other, the wisest decision for them is to cooperate and thus reduce their punishment.
Pancreas, adrenal glands, pituitary gland, thyroid
A . . . . . . . . . . . . .
Answer:
The law of increasing opportunity cost is the concept that as you continue to increase production of one good, the opportunity cost of producing that next unit increases. This comes about as you reallocate resources to produce one good that was better suited to produce the original good.