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Author Question: Impoundment dams block the movement of silt downstream and cause silt to back up behind the dam. ... (Read 78 times)

jayhills49

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on: Jul 21, 2018

Impoundment dams block the movement of silt downstream and cause silt to back up behind the dam. This is a problem because the built-up silt can cause areas of low oxygen called _______________ sediments.
 
 


 
  Fill in the blank(s) with the appropriate word(s).

Question 2

One effect of dams placed on rivers and streams is the blocking of fish migration. This problem has been somewhat addressed by employing a device called a(n) _______________.
 
  Fill in the blank(s) with the appropriate word(s).


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bookworm410

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Reply #1 on: Jul 21, 2018
Answer to Question 1

anoxic

Answer to Question 2

fish ladder


jayhills49

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Reply #2 on: Jul 21, 2018
Thank you!


bookworm410

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Reply #3 on: Jul 21, 2018
Always glad to help...


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