Question

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What is a drainage?​

Answer 1

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A system of flowing water from the higher level to the lower level.

Answer 2

Answer:

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• Drainage is the natural or artificial removal of a surface's water and sub-surface water from an area with excess of water. 
• The internal drainage of most agricultural soils is good enough to prevent severe waterlogging, but many soils need artificial drainage to improve production or to manage water supplies. 

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