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Vocab #18


To break down or wear away. Time and weather breaks down materials. Decay
To break down an organism into nutrients Decompose
An amount of rock or soil layer down in an area Deposit
The natural process where rock and soil are moved from one place to another Erosion
The scientific study of Earth Geology
Dark rich soil formed from decayed plants and animals Humus
Small living plants or animals that can only be seen with a microscope Microrganism
The amount of of water in an object Moisture
A principle stating that younger rocks are above the older rocks Superposition
Breaking down rocks and other materials on Earth's surface. This forms sediment in the soil Weathering