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Author Question: Most fish need a minimum of ________ parts per million of dissolved oxygen in seawater to survive ... (Read 50 times)

Marty

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on: Aug 22, 2018
Most fish need a minimum of ________ parts per million of dissolved oxygen in seawater to survive for long periods.
 
  A) 0.4
  B) 4
  C) 40
  D) 400
  E) 4,000

Question 2

Most marine animals have specially designed fibrous respiratory organs called ________ that exchange oxygen and carbon dioxide directly with seawater.
 
  A) bladder
  B) gills
  C) lobes
  D) lungs
  E) osmosis


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Briannahope

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Reply #1 on: Aug 22, 2018
Answer to Question 1

B

Answer to Question 2

B


Marty

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Reply #2 on: Aug 22, 2018
Both answers were spot on, thank you once again


Briannahope

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Reply #3 on: Aug 22, 2018
Great! Please up vote :D


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