Capillary water:
a. can only move downward.
b. is responsible for creating caliche.
c. is bound to the surface of soil particles by strong electrical forces.
d. is the primary agent in transporting soil particles from one level to another.
B
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As a fast-moving car brakes to a slower speed and then rolls off the edge of a cliff, its acceleration undergoes
A. no changes in direction. B. the same directions as changing velocities. C. changes in direction. D. none of the above
The random movement of materials through a solution is ____________. Fill in the blank(s) with the appropriate word(s)
The mating ritual of the blue-footed boobies in the Galapagos Islands includes a complex dance. The birds will not mate with other birds that do not know the dance. This is an example of ________
A) structural isolation B) mechanical isolation C) behavioral isolation D) geographic isolation E) reproductive isolation
The main component of photochemical smog is ____
A) ozone B) carbon monoxide C) sulfur dioxide D) chlorofluorocarbons