Oceanic and atmospheric circulation patterns _____ during the Mesozoic
A)did not change
B)greatly accelerated
C)greatly decelerated
D)accelerated in the Northern Hemisphere only
E)accelerated in the Southern Hemisphere only
B
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Somalia is one of the most politically stable countries in Africa
Indicate whether the statement is true or false.
The rate of deforestation in the Brazilian Amazon has increased since 2000. Which of the following is NOT a reason for the acceleration in deforestation?
A) the development of new roads and dams B) the expansion of industrial mining and logging C) the incidence of human-ignited wildfires D) the clearing of land for farming by local forest-dwellers E) the growth in corporate farms
Which one of the following concerning mid-ocean ridges is false?
A) Sediments include thick siliceous ooze deposits and sandy turbidite beds. B) Terrigenous sediment coverings are very thin or absent. C) They are sites for submarine eruptions of basaltic lava. D) They are where young lithosphere is added to the edges of spreading, oceanic plates.
Much of the north-central United States is actually overlain by ice-deposited material called ________
A) till B) shield C) tallons D) debris E) sediments