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9.1: Importance of the Atmosphere

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

atmosphere

The layer of gases that surrounds a planet.

photosynthesis

The process in which plants produce simple sugars (food energy) from carbon dioxide, water, and energy from sunlight. Photosynthesis uses carbon dioxide and releases oxygen.

respiration

The process in which organisms convert sugar into useful food energy. Respiration burns oxygen and produces carbon dioxide.

ultraviolet (UV) radiation

High energy radiation from the Sun that can be dangerous to Earth’s life.

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Difficulty Level:
At Grade
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Date Created:
Feb 24, 2012
Last Modified:
Aug 07, 2016
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