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The Fertile Crescent is basically where human civilization started. It stretches from Mesopotamia and across the Mediterranean coast to Egypt. Early civilizations depended on agriculture. To make agriculture, you need a river because it is a good water source to help grow your crops.
If you look at the map I have provided below, you will see that there are tons of rivers. This would make it very easy for settlers to grow crops. This means that sea tides and eroding mountains aren't the answer. I don't think the rivers were flooding and natural canals is an oxymoron because canals are artificial waterways, but this all should give you and idea.
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<h2><u>Answer:</u></h2>
Henan, a region in Central China's Yellow River Valley, is generally perceived as where Chinese human progress started. There are 4 antiquated capitals inside its fringes. Luoyang, capital amid various traditions, is home to Baima Si (White Horse Temple).
In November 2013, after the Third Plenum of the eighteenth Central Committee of the Chinese Communist Party, China reported the choice to loosen up the one-kid arrangement. Under the new strategy, families could have two kids in the event that one parent, as opposed to the two guardians, was a single kid.
Explanation:
<em>The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat.</em> Gases in the atmosphere such as CO2, water vapor, methane, nitrous oxide, ozone and some artificial chemicals such as chlorofluorocarbons absorb and re-radiate the sun's energy maintaining the Earth's temperature at around 33 degrees Celcius, this happens especially with infrared light that wants to go back to space. This infrared heat spreads back to the land and oceans. This absorption does not happen with visible light, the radiation at 400-800nm easily passes through the atmosphere.
I hope you find this information useful and interesting.
<span>Hay 3 ciudades importantes.
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Earth is called a unique planet since it is the only planet in the solar system which supports life due to its balanced proportions of water, temperature, and oxygen