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Atmosphere
The layer of gases surrounding Earth, essential for weather, climate, and supporting life. It consists of multiple layers, including the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.

Component
of the Earth that contains gases, such as nitrogen and oxygen, surrounding the planet.

Nitrogen
The most abundant gas in the Earth's atmosphere, making up about 78% of it. Nitrogen is essential for plant growth and is a key component of amino acids and proteins.

Oxygen
A colorless, odorless gas essential for respiration in living organisms, comprising about 21% of Earth's atmosphere.

Lithosphere
the rigid outer layer of the Earth consisting of the crust and upper mantle, home to landforms and geological processes.