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  • Understanding Soil Formation: How Rocks Become Soil
    The sentence "Soils were once rocks" means that the soil we see today was originally formed from solid rock.

    Here's a breakdown:

    * Rocks: These are naturally occurring solid materials made up of one or more minerals.

    * Weathering: Over long periods, rocks are broken down into smaller pieces by forces like wind, rain, ice, and temperature changes. This process is called weathering.

    * Erosion: The smaller pieces of weathered rock are then transported away by wind, water, or ice. This is called erosion.

    * Soil Formation: As these transported particles settle, they mix with organic matter (decomposed plants and animals) and other materials. Over time, this mixture forms soil.

    So, the sentence is saying that the process of weathering and erosion of rocks eventually creates the soil that we see today.

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