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OpenStudy (anonymous):
Many scientists believe life was able to leave the water's edge and move further in on land, away from the water, due to the development of
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OpenStudy (aaronq):
legs? a more complex respiratory system?
OpenStudy (anonymous):
Many scientists believe life was able to leave the water's edge and move further in on land, away from the water, due to the development of A. amniotic eggs. B. reptiles. C. better shelters. D. four-chambered hearts.
OpenStudy (anonymous):
d maybe?
OpenStudy (aaronq):
amniotic eggs
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