Which best explains how oxygen is involved in the release of energy within an organism? A.
Oxygen helps speed up chemical reactions within an organism’s body.

B.
Oxygen combines with water to move nutrients throughout the organism.

C.
Glucose is broken down in the presence of oxygen to release energy needed by cells.

D.
Bonds holding oxygen molecules together are broken to release energy needed by cells..

icc, international association for cereal chemistry

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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.