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Biology, 22.06.2019 21:00
Which muscle cell structure stores calcium ions that are used to trigger the contraction?
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Biology, 22.06.2019 21:30
Jellyfish sometimes squeeze in the sides of their bodies. this pushes a stream of water from the back end of their bodies. according to newton’s third law of motion, how will this behavior affect of the jellyfish ?
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Only mutations of cells are passes on to their offspring...
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