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Sarah science 2018
Terms in this set (19)
Crumbly, dark brown soil that is a mixture of humus, clay, and other minerals
type of weathering in which rock is physically broken down into smaller pieces
grinding away of rock by rock particles carried by water, ice, wind, or gravity.
processes that breaks down rock through chemical changes.
iron combines with oxygen in the presence of water in a process.
material is full of tiny, connected air spaces that allow water to seep through it.
dark colored substance that forms as plant and animal remains decay.
layers of soil that differs in color and texture from the layers above or below it.
consists of clay and other particles washed down from the A horizon, but little humus.
organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals.
the process that breaks down rocks and other substances at earth's surface.
the removal of rock particles by wind, water, ice, or gravity.
the same process that operate today, operated in the past.
wedges of ice in rocks widen and deepen cracks.
loose, weathered material on earth's surface in which plants can grow.
solid layer of rock beneath the soil.
soil is a measure of how well the soil supports plant growth.
soil made up of about equal parts of clay, sand, and silt.
as plants shed leaves they form loose layers.
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