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<u><em>Restless tectonic plates move (shift) between one and fifteen centimeters per "YEAR"</em></u>
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<u><em>Tectonic plates move at a moderate around one and fifteen centimeters per year. The plates move in different ways, once in a while crashing into one another.</em></u>
A pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule.
that is the definition^
A food web is a system of interlocking and interdependent food chains.