A vertical cross section of soil extending from the surface to the deepest extent of plant root activity or to the regolith and bedrock is known as a
A) soil horizon. B) soil profile. C) pedon. D) polypedon.
B
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Which of the following give(s) the correct order of ionization energies?
A) Li < Na < K < Rb B) Na < Mg < P < Cl C) both a and b D) neither a nor b
The Appalachian Mountains formed as a result of ________
A) the initial formation of Pangaea B) the collision of Greenland and Norway C) the collision of North America and Africa D) the collision of North America and Europe E) the break-up of Pangaea
In a nuclear power plant, the amount of electricity generated is regulated by ________
A) moving control rods into or out of spaces between the fuel rods B) moving the nuclear fuel in and out of water C) releasing surplus heat out of cooling towers that are always part of nuclear power plants D) the Federal Trade Commission E) changing the water levels that surround the control rods
Brittle behavior in rocks leads to formation of folds.
Answer the following statement true (T) or false (F)