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.
Question
Updated 8/6/2018 10:36:26 AM
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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Rating
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Some of the first animals to develop an endoskeleton were: Echinoderms.
Confirmed by jeifunk [8/6/2018 10:36:30 AM], Rated good by jeifunk

Questions asked by the same visitor
Factor completely and then place the factors in the proper location on the grid. 25a^2 - 30a + 9
Weegy: (x + 3)(x - 3) factored. Unfortunately we cannot graph something on our system. (More)
Question
Updated 3/1/2017 4:29:47 AM
25a^2 - 30a + 9 = (5a - 3)^2
Simplify. (-2)-^3 (a)-8 (b)-1/8 (c)1/8 (d)8
Weegy: (d)8 (More)
Question
Updated 4/29/2015 4:20:56 AM
(-2)^-3 = 1/(-2)^3 = -1/8
Confirmed by sujaysen [6/28/2015 9:29:35 AM]
What is the function of this sentence? People should use their talents as fully as possible. a.to state theme b.to describe plot
Question
Updated 2/4/2015 11:18:04 AM
People should use their talents as fully as possible. The funtion of this sentence is to state theme.
An earthworm receives support and shape from its fluid-filled cavity. It has _____. (a)an endoskeleton (b)an exoskeleton (c)a hydroskeleton (d)no skeleton
Weegy: (c)a hydroskeleton. A hydroskeleton, also called hydrostatic skeleton, occurs in many soft-bodied animals, such as earthworms. (More)
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Muscle tissue responsible for movement is _____ muscle. (a)cardiac (b)skeletal (c)smooth
Question
Updated 2/4/2016 7:19:03 PM
Muscle tissue responsible for movement is skeletal muscle.
Confirmed by yumdrea [2/4/2016 9:31:06 PM]
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