High-pitched sound has a high
A) speed.
B) frequency.
C) number of partial tones.
D) all of the above
E) none of the above
B
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If you visited Curitiba, Brazil, you would expect to find
a. no recycling program b. a sophisticated bus system c. very polluted air d. residents who wish to relocate to other cities e. no high-rise apartments
What are some of the adaptations exhibited by organisms living in estuaries? How do pelagic species use estuaries to their advantage?
What is loess?
A) a dark, coarse sand that is eroded from sea cliffs by wave energy from the ocean B) a human-made material that is a byproduct of the burning of high sulfur coal C) a fine, glacially generated silt that is deposited by the wind D) the rich dark topsoil that is found on the Japanese island of Honshu E) a clay-like substance from which people in China use to make cement for urban areas
The "sensitivity factor" in the model used to represent human environmental impact denotes ________
A) the sensitivity of governments to carrying capacity demands B) the sensitivity of endangered species to human population infringement C) human sensitivity to what needs to be done to protect the environment D) economic sensitivity to resource use E) the sensitivity of an environment to human pressures