When moving upward on an energy pyramid from one level to the next, what happens to the usable energy in an ecosystem?

Ineed because i cannot find the answers anywhere

1. develop an action plan to deal with each of the following scenarios. a friend offers you a cigarette. (2 points) you go to a party and see they are serving alcohol. (2 points) a student offers to sell you some marijuana. (2 points) a friend comes to your house and asks you if he or she can take drugs out of your parents' medicine cabinet. (2 points)

Why are people in history willing to fight in conflicts against a more powerful oppressor?