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7 Cards in this Set

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Permeable
passable; allowing fluid to penetrate or pass through it.
Bedrock
the sollid layer of rock beneath the soil.
Loam
soil made of about equal parts clay, sand and silt
topsoil
a crumbly, dark brown soil composed of humus, clay, and other minerals.
subsoil
usually consists if clay and other particles washed down from a horizon, but little humus.
litter
the leaves that plants shed form a loose layer on the ground.
decomposers
the oganisims that break the remains of dead oganisims into smaller pieces.