CHAPTER 16
Lesson 17
CHAPTER 19
perennial irrigation
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Perennial irrigation refers to a practice that entails regulation of the flow of water to an agricultural area through use of barrages, dams, and reservoirs. This system makes sure that land land is irrigated all the time. This type of irrigation is good for crops such as rice which require a lot of water.
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its a flow of water
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Lesson 20