'Improved irrigation techniques' diaporamas de présentation

Chapter 14

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21.2 Groundwater Problems

21.2 Groundwater Problems. These include pollution, salt, and draining too much. 21.2 Other Effects of Groundwater Overpumping. Sinkholes form when the roof of an underground cavern collapses after being drained of groundwater. Figure 14-10. 21.2 Groundwater Depletion: A Growing Problem.

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Chapter 14

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Drought

Drought. What is Drought. Drought is a normal, recurrent feature of climate Originates from precipitation deficiency over extended period of time, usually a season or more Considered relative to some long-term average

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The West and the Transcontinental Railroad

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Zhou Dynasty

Zhou Dynasty. By: Haley Hernandez Jarrett Sippola Jim Edgar Lauren Turner Sara Cody Will Gordy. Human Environment Interactions. Shang and Zhou Dynasties coexisted with each other being friendly at times, but warring with them at others

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