Answer:
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
Explanation:
This really isn't a 'Biology' question.
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Answer:
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Answer: Coronal Mass ejection-geomagnetic storm
Geomagnetic storm-aurora
Explanation:
I just took the test
Smooth muscles depolarize as a result of a transmembrane current of Calcium ions. When an action potential depolarizes the muscle cell membrane, it also travels into the body of the cell via the t-tubules. Unlike skeletal muscle, smooth muscle is dependent in two sources of calcium in order to intiate contraction. These two sources are calcium sequestered in the S.R. of the smooth muscle cell.