Volcanoes formed from silica-rich magma
A) have gently sloping surfaces that give them the appearance of a shield.
B) are highly explosive and dangerous.
C) are associated with midocean ridges.
D) are associated with rift zones.
B
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Judge the following sentence according to the criteria given below: Desertification results from the
expansion of existing deserts BECAUSE dryland ecosystems are extremely vulnerable to inappropriate land use. a. The assertion and the reason are both correct, and the reason is valid. b. The assertion and the reason are both correct, but the reason is invalid. c. The assertion is correct, but the reason is incorrect. d. The assertion is incorrect, but the reason is correct. e. Both the assertion and the reason are incorrect
Suppose it is warm and raining, and a cold front is moving toward your location. Directly behind
the cold front it is cold and snowing. Still further behind the front the weather is cold and clearing. If the front is scheduled to pass your area in 6 hours, a persistence forecast for your area for 12 hours from now would be: a. cold and snowing. b. cold and clearing. c. cold and cloudy. d. warm and raining. e. not enough information on which to base a forecast.
The most significant anticipated benefit of the enclosure movement was to
A) destroy traditional village life. B) promote agricultural efficiency. C) replace abandoned villages with new farmsteads. D) discourage urbanization. E) create an aristocracy.
Much of the New World gained independence by 1830. How did the post-independence experience of Brazil differ from the rest of Latin America?
A) The British bought up virtually all the land. B) Cattle destroyed almost all the vegetation. C) The United States invaded and made it a colony until 1898. D) Several universities were started which made it the most educated country in the Americas. E) It did not fragment and remained a single country.