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There are 213 records start with B |
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B horizon |
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A soil horizon, usually beneath an A horizon, or surface soil, in which (1) clay, iron, or aluminum, with accessory organic matter, have accumulated by receiving suspended material from the A horizon above it or by clay development in place; (2) the soil has a blocky or prismatic structure; or (3) the soil has some combination of these features. In soils with distinct profiles, the B horizon is roughly equivalent to the general term "subsoil." |
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B.L.A. |
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Bachelor of Landscape Architecture. The first professional degree for those who study landscape architecture. |
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Backcrossing |
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Crossing a hybrid with one of the original parents. |
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Backscattering |
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That part of solar radiation directed back into space as a result of diffusion by particles in the atmosphere. |
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Backshore |
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The zone behind the shore, between the beach berm and the back-shore slope. |
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Backshore slope |
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The bank or bluff landward of the shore that is comprised of in situ material. |
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Backswamps |
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A low, wet area in the floodplain, often located behind a levee. |
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Bacteria |
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Microscopic one-celled organisms, many of which play an important role in the soil by breaking down organic matter and in animal nutrition by breaking down cellulose into digestible nutrients. |
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Bacteriocide |
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A chemical compound that kills bacteria. |
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Bacteriophage |
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A virus that infects specific bacteria and usually kills them. Specific phages are used to identify certain bacterial plant pathogens. |
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