Explanation:
Both eras and periods are greater, but an era is more than 1 year
Answer:
A climatologist studies weather patterns over a period of time. Their work is similar to that of meteorologists but focuses on a much longer timescale, studying trends over months, years or even centuries.
Explanation:
basically someone who studies weather patterns in one area for a while, aka climate
Brought harmony to diverse groups of people is the correct answer.
Because of the vast area of China that is covered with mountains that make it hard to inhabit said areas.
hope it helped you
