Q Why some polymers and molecular crystals are transparent and others are not?

Hi; Crystalline polymers are usually opaque because of light scattering on the numerous boundaries between the crystalline and amorphous regions. ... Optically transparent polymers are usually amorphous because crystallites scatter light giving a milky/opaque appearance.

Explanation:

Learned before and its ezay

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explanation:

mitosis

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.