Hello!
False! They vary from crystal to crystal. Nothing is ever honestly the same size of one another, especially not crystals. They're all different, like snowflakes.
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Superficial is a used to describe structures that are closer to the exterior surface of the body. Deep refers to structures closer to the center of the body region. For example, skin is superficial to bones, and bones are deep to skin.
Molecules with similar shapes have similar biological effects, because shape (structure) dictates effects (functions).
