Biology, 22.06.2019 18:30 ryanbreland14
Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas
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In which case would a scientist choose to use a dissecting microscope rather than a compound microscope
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What are the student's observations and inferences before he starts his investigation?
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Biology, 22.06.2019 23:00
Sarah and john are having a discussion on genetic diversity sarah believes it happens over a long period of time john believes it happens immediately who is correct
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Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are...
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