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Knows that all organisms must be able to obtain and use resources, grow, reproduce and maintain a relatively stable internal environment while living in a constantly changing external environment; regulation of an organism's internal environment involves sensing external changes and changing physiological activities to keep within the range required to survive.

Preventing Hypothermia

Hypothermia occurs when a warm-blooded animal, such as a person, becomes extremely cold, and loses control of his or her body's core temperature. This is much more likely to happen when a person wet than dry. Hypothermia can cause death. Oftentimes it is difficult to know when someone starts to go into hypothermia. It is even difficult to know when you yourself are experiencing the beginning signs.

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