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Biology, 22.06.2019 06:00, theresamarieuehling2
Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this
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Biology, 22.06.2019 14:10, genyjoannerubiera
The diagram shows a chicken embryo and a human embryo
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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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en un laboratorio se tienen dos gases ideales contenidos en dos recipientes. cada gas tiene las prop...