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  • Understanding Earth's Nonliving Components: The Geosphere
    The nonliving material that makes up the Earth can be broadly categorized into:

    1. Geosphere:

    * Rocks: The most abundant component, formed from minerals.

    * Igneous: Formed from cooling magma or lava (e.g., granite, basalt).

    * Sedimentary: Formed from the accumulation and cementation of sediments (e.g., sandstone, limestone).

    * Metamorphic: Formed from existing rocks transformed by heat and pressure (e.g., marble, slate).

    * Minerals: Naturally occurring, solid inorganic substances with a defined chemical composition and crystal structure.

    * Soil: A mixture of weathered rock, organic matter, air, and water.

    * Water: Found in oceans, lakes, rivers, groundwater, and glaciers.

    * Air: A mixture of gases, primarily nitrogen and oxygen, surrounding the Earth.

    2. Atmosphere:

    * Gases: Primarily nitrogen, oxygen, argon, carbon dioxide, and trace amounts of others.

    * Dust: Tiny particles of rock, soil, and other materials suspended in the air.

    3. Hydrosphere:

    * Water: In its various forms (liquid, solid, gas) covering approximately 71% of the Earth's surface.

    4. Cryosphere:

    * Ice: Frozen water found in glaciers, ice caps, and permafrost.

    5. Other:

    * Meteorites: Extraterrestrial objects that impact the Earth.

    * Volcanic ash: Fine particles ejected from volcanoes.

    * Dust storms: Large amounts of dust lifted into the atmosphere.

    It's important to note that while these materials are nonliving, they play a crucial role in supporting life on Earth and shaping the planet's geology and climate.

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