Which of the following could produce an ocean?
a. one geologic plate colliding with another one.
b. magma being forced onto the surface of the earth.
c. two geologic plates sliding over each other.
d.sea floor spreading

The material properties of nanostructures are different from the bulk due to the high surface area over volume ratio and possible appearance of quantum effects at the nanoscale. ... Yu; they found that the structural distortions on the quantum dots depend both on the kind of dopant and on the size of the dots.

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