Answer: They wore animal hides and furs.
Explanation: Before farming was invented, people didn’t have the ability to have a stable home and life, so they were primarily nomads, moving from place to place along with the animals the hunted and consumed, so they most likely wore the pelts and skins they collected from the hunted animals.
1) You choose which college to go to: each college you don't choose is an opportunity cost
2) you choose which language to learn. You can't learn them all. If you decide to learn Chinese, you might be missing out on Spanish
3)Where do you want to do your exchange? if You choose one place, you're missing out all the other opportunities.
ANSWER: There are various steps to solve a problem. The simplest way to solve a problem has only five steps. The second step to solve any problem is to brainstorm what could be the possible solutions to the problem. In case of president addressing a problem, she will invite all the officials of the concerned department and would discuss about the problem and try to figure out possible solutions by considering the practical aspects of solving the problem. They will also have to look into the benefits and problems of the citizens of the country.
