Highly trained soil scientists generally map a soil landscape by sampling the soil in:
A) four soil pits, one dug in each corner of the area to be mapped.
B) a pre-determined grid-like geometric pattern of evenly spaced points.
C) a series of transects with sampling points concentrated near expected soil boundaries.
D) a computer-calculated pattern of random points.
E) both A and D
C
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A. natural gas heat B. electric heat C. LP gas heat D. oil heat
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