Answer:
Global Warming.
Explanation:
For solutions there's plenty of examples online such as electric cars and producing less gas into the air. Stop using natural resources(coal,oil,petroleum). Use solar panels for your house. any of those ideas would work. explain each idea and finalize it into the solution.
Answer:
calendrical systems and hieroglyphic writing.
Explanation:
The answer is: Time, organization, and size
As the length of contact increased, the more time you would spend with the groups. This often correlated with the increase in size of the organization (even though larger organization tend to develop its own members division and not all members would know one another)
