The most acceptable theory about how humans came to populate Earth is that they migrated over land from Africa over the last 80,000 years.
<h3>What was the widely accepted human origin? </h3>
It was accepted that Africa is where the modern humans began over thousands of years from which they spread across the world.
It was believed that different environments needed different appearance and behavior and this led to ab enormous variety among human populations of the Earth.
Therefore, the Option C is correct.
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The point of the cold war was to see what nation could prove to have better technology.
Answer- the arms race was so important because it helped fuel the cold war the cold war was based off the arms race because nations were simultaneously producing technology better than eachother or trying to prove to eachother that if another country could do it so could they. The cold war was a fight between the U.S and the soviet union proving eachothers nuclear power trying to threaten eachother. Both nations were stockpiling weapons, and spending billions to show their technological advancement in nuclear weapons.
You can move things around to make it more simple or straightforward but thats about it
Answer: D. it lies in a valley, surrounded by mountains, that traps in air pollutants over the city.
Explanation: Being in a valley results in air pollution being contained to an area.