Different colors of light correspond to different light
A. polarities.
B. velocities.
C. frequencies.
D. intensities.
Answer: C
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The recorded air temperature the night after a heavy snowfall is much lower than the previous night despite a similar air mass being in place for both nights. What is the best explanation for this change in air temperature?
A. Snow is a poor conductor of heat. B. Snow is a poor reflector of heat. C. Snow is a poor radiator of heat. D. Snow has a low albedo.
The first domesticated animals were probably
A) horses. B) cattle. C) dogs. D) sheep
The Colorado Plateau has a record of geologic events occurring over about 2 billion years that was puttogether:a
in a sequence found in the Grand Canyon. b. in a sequence from a drill core through the Plateau. c. by correlating the uppermost rocks in one area with the lowermost equivalent rocks in another area. d. in a sequence exposed in the Colorado Rockies. e. in a sequence spanning the entire United States.
What ecosystem services from U.S. national forests had the greatest demands placed on them following World War II and the country's rapid population growth?
A) soil formation and agriculture B) grazing and agriculture C) food, fiber, and plant growth D) grazing, recreation, and timber resources E) soil formation and wilderness protection