7. Soil particles are classified as
A parent rock, humus and bacteria
C. sand, silt and clay
B. topsoil, subsoil, parent rock
D. igneous, sedimentary and metamorphic
A parent rock, humus and bacteria
C. sand, silt and clay
B. topsoil, subsoil, parent rock
D. igneous, sedimentary and metamorphic
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Answer:
C. sand, silt and clay
Explanation:
Soil particles vary greatly in size, and soil scientists classify soil particles into
sand, silt, and clay.
Starting with the finest, clay particles are smaller than 0.002 mm in diameter. ... Sand ranges from 0.05 to 2.0 mm. Particles larger than 2.0 mm are called gravel or stones