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Science Terms. Topsoil. The uppermost layer of soil. Top Soil. S ubsoil. The layer of soil just below the uppermost layer of soil. Subsoil. Bedrock. Unweathered rock that lies below the lowest layer of soil. Bedrock. Fossil. The preserved remains of a plant or animal that lived long ago.
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Topsoil The uppermost layer of soil Top Soil
Subsoil The layer of soil just below the uppermost layer of soil Subsoil
Bedrock Unweatheredrock that lies below the lowest layer of soil Bedrock
Fossil The preserved remains of a plant or animal that lived long ago Bedrock
Delta A large mass of deposited sediment at the mouth of a river
Weathering The slow breaking apart or wearing away of rock into smaller pieces
Erosion The movement of weathered rock material from on place to another
Question What is an example of erosion? Wind moving sand from a dune
Question What is an example of weathering? Large rocks wearing down
Question How are weathering and erosion related to one another?