Question 15 of 20:
select the best answer for the question
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
Biology, 21.06.2019 16:00, farhadi2
The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?
Answers: 2
Biology, 23.06.2019 05:00, MalikaJones
Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?
Answers: 1
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