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Some of the first animals to develop an endoskeleton were _____. mollusks. arthropods. annelids. echinoderms.
Some of the first animals to develop an endoskeleton were: Echinoderms.
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Asked 4/21/2012 10:34:38 AM
Updated 8/6/2018 10:36:26 AM
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Flagged by andronep [8/6/2018 5:31:14 AM], Unflagged by jeifunk [8/6/2018 10:36:25 AM], Edited by jeifunk [8/6/2018 10:36:26 AM]
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Some of the first animals to develop an endoskeleton were: Echinoderms.
Added 8/6/2018 5:31:16 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [8/6/2018 10:36:30 AM], Rated good by jeifunk, Rated good by DahJTkfw
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Simplify. (-2)-^3 (a)-8 (b)-1/8 (c)1/8 (d)8
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Updated 4/29/2015 4:20:56 AM
1 Answer/Comment
(-2)^-3 = 1/(-2)^3 = -1/8
Added 4/29/2015 4:20:56 AM
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When an invertebrate reaches the adult stage, it most likely stops growing and can begin reproduction.
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Updated 2/4/2015 11:18:04 AM
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Added 2/4/2015 11:18:04 AM
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