Answer:
Weather
Explanation:
Weather controls the distribution of rain water on earth. All living organisms on earth require liquid water to survive, and humans require fresh.
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River valley trade made them key economic areas.
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Zhou Dynasty is the people who did that[
False.
Johannes Gutenberg is usually cited as the inventor of the printing press.
Answer: Is prone to desertification or drought.
Explanation: The Sahel region is located in Africa between the Sahara to the north and the Sudanian Savanna to the south.
The Sahel has a semi arid climate which is characterized by precipitation below potential evapotranspiration.
What this means is that the amount of water that would be evaporated and transpired by a specific crop or ecosystem is low. This region is prone to desertification or drought because of the low amount of water evaporated and transpirated in the region.