Go to your social studies book read the then throughly then ask your parents for some help if you still don’t understand
Answer:
i would say marginal analysis and scarcity
Explanation:
See scarcity at other answer
Marginal analysis is an examination of the additional benefits of an activity compared to the additional costs incurred by that same activity. Marginal refers to the focus on the cost or benefit of the next unit or individual, for example, the cost to produce one more widget or the profit earned by adding one more worker. Like she chose to have one bucket of water per task she had to do with leftover water, inted of having a bath and using all the water. Like oppertunity cost.
Selection bias
is a kind of error that occurs when the researcher decides who is going to be studied.
Answer - The core of teaching consists of four basic values: dignity, truthfulness, fairness and responsibility & freedom.
