Which of the following is not true about the spatial scales at which soil scientists study soils?
A) The smallest individual unit with which soils are described is called a soil pedon.
B) A pedon can be about 1 to 10 square meters and deep enough (about 2 meters deep) to distinguish soil horizons.
C) A pedon must be significantly different in properties from the pedons adjacent to it.
D) Boundaries between different soil types on the landscape can be gradational or fairly abrupt.
C) A pedon must be significantly different in properties from the pedons adjacent to it.
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________ is windblown silt that covers much of the upper Midwest, as well as other areas
Fill in the blank(s) with correct word
The nature of volcanic eruptions is closely related to plate tectonics and magma type. Which of the following best describes basaltic magma?
A. relatively SiO2 rich and cool B. relatively SiO2 poor and cool C. relatively SiO2 poor and hot D. relatively SiO2 rich and hot
A stone is thrown vertically upward. At the top of its path, its acceleration is
A. less than 10 m/s2. B. 10 m/s2. C. zero. D. more than 10 m/s2.
How does FIFRA attempt to control pesticides? What new perspective does FQPA bring to the policy scene?
What will be an ideal response?