Question 15 of 20:
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15. fish respiratory systems...
Question 15 of 20:
select the best answer for the question
15. fish respiratory systems exchange gas and receive oxygen at the gills. this oxygen then enters the
blood stream and is pumped through the heart and back through the gills without first returning to the
heart. this order of events best describes which type of circulation system?
o a. single loop
ob. open
c. recycling
od. double loop
Answers: 1
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