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Author Question: Outgassing and ____ are probable sources for Earth's early water vapor. A)solar wind B)icy comets ... (Read 121 times)

theo

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Outgassing and ____ are probable sources for Earth's early water vapor.
 A)solar wind
 B)icy comets
 C)photochemical dissociation
 D)land plants
 E)the ozone layer

Question 2

Briefly explain the trade-offs that accompany any flood control project.



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aham8f

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Answer to Question 1

B

Answer to Question 2

The obvious benefits of controlling flooding are offset by loss of sediment deposition area, loss of wetland habitat, loss of the natural evolution of a drainage basin (natural changes in the stream channel such as meandering), increased soil erosion, and decreased natural ability to moderate effects of floods.





 

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