The boundary between drainage basins is called the
A) watershed
B) high point
C) basin split
D) drainage divide
D
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The Spanish flu outbreak that lasted from January 1918 to December 1920 spread around the world, even to the Arctic and remote Pacific islands. During the outbreak, between 50 and 130 million people died making it one of the deadliest natural disasters in human history. Which best describes this outbreak?
A. a pandemic B. an epidemic C. a transgenic disaster D. a remission
Like Jupiter and Saturn, Neptune emits about 2.5 times as much heat energy as it receives from the Sun, although calculations show it should have already lost all of its original heat. What is the most likely explanation?
A) Unlike Uranus, it is still contracting. B) Radioactive decay has kicked into overdrive, with runaway reactions taking place. C) The basis for these calculations is currently being questioned by a new breed of more probing scientists. D) There are also unexplained gravitational effects taking place, which may hold some clue as to where the heat may be coming from. E) Uranus' gravity is creating a "slingshot" effect, catapulting solar winds into Neptune's atmosphere in the form of as of yet undetected radiation.
________ exhibits a conchoidal fracture
A) Quartz B) Halite C) Gypsum D) Calcite
An example of a modern convergent boundary would be ________
A) Iceland B) the East African Rift valley C) the San Andreas Fault D) India slamming into Asia