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Home Q & A Board Biology-Related Homework Help General Biology
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loryatchy loryatchy
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6 years ago
In fish, blood flows in a direction opposite to the flow of water over the gills in a process known as:
  a. concurrent exchange.
  b. countercurrent exchange.
  c. crosscurrent exchange.
  d. exhalation.
  e. diffusion

Question 2

Clams and other bivalves typically have:a.
   dermal gills.
  b. gills adapted for trapping food.
  c. an operculum.
  d. book lungs.
  e. swim bladders.
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Ashestreen22Ashestreen22
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6 years ago
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loryatchy Author
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#2
6 years ago
Thanks for your help <3
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