Answer:
The answer is c, thanks commenters!
Explanation:
It's called a mountain range.
1. As climate changes (gets cooler or warmer), then that relates to the amount of arable land, crops and animals to feed off of.
2. The characteristics of civilization are: social structure, stable food supply, religion, government, writing, culture and technology.
Answer: A country’s wealth should be measured based on its productivity.
