Answer:
How does food surpluses lead to labor specialization?
Explanation:
Surplus food leads to job specialization because not every one needs to be farming. This leads to some people being able to take up other things, such as metal work. Because they are able to dedicate time to their crafts, people became good at them, and it became their job, leading to new technologies.
Well, it could be true if they are NEGATIVE points. :-)
Answer:
4. people must make trade-offs.
Explanation:
Scarcity is the shortage of supply with respect to demand. It arises due to unlimited wants contrasted with limited resources - having alternative uses.
Scarcity : Demand > Supply
This leads to trade off (sacrifise) of something to attain anything, since the limited resources are short of unlimited wants & have alternative uses.
Eg : Having fixed money income (analogous to resources) & many commodities in consumption basket (analogous to wants); if one commodity is gained - it would be at the cost of sacrifising (trade off) some other commodity.
I want to say federal but wait till someone else answers.
