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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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drelog drelog
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8 years ago
An important evolutionary step for reptiles was ________.
A) the development of shell-covered eggs
B) lungs that could hold air
C) the growth of scales from armor plating
D) the formation of a true spine
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Earth Science

Earth Science


Edition: 14th
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PulsaPulsa
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8 years ago
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drelog Author
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#2
8 years ago
Exactly what I needed, exam is tomorrow!
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