The hazard posed by a volcano depends on both the population nearby and the eruption product
a. True
b. False
ANSWER: True
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Which of the following best explains a population pyramid (age-sex pyramid) that looks like an umbrella, with very narrow cohorts at the bottom that widen broadly near the top?
A) The population pyramid is upside down. B) The population is a retirement village. C) The population is a college town. D) Migrants are dominant in the community. E) The population has an open-door migration policy.
The Sahel
A) is just north of the Sahara Desert. B) was under the control of the Soviet Union. C) has precipitation that is under the influence of the ITCZ. D) increased in size substantially in the 1980s. E) all of the above
The spring tide occurs when the Moon and Sun are neither in conjunction nor in opposition alignment
Indicate whether the statement is true or false
Milankovitch cycles involve the periodic ________ and could be responsible for ________ weather changes.
A. Seasons; daily B. Convection currents in the lower atmosphere; drastic C. Tidal cycles from month to month; seasonal D. Wobbling of the earth's axis and orbital shifts; cyclic E. Summer/winter seasonality on the Earth; gradual