It is estimated to take _____ for the ocean's volume to circulate through the oceanic crust at spreading centers
a. 1 million years
b. 10 million years
c. 100 million years
d. 1 billion years
e. 10 billion years
b
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Fossils are remains or traces of prehistoric life that have been preserved in rocks of Earth's crust
a. True b. False
The intertropical convergence zone (ITCZ) is a region where:a
the polar front meets the subtropical high. b. northeast trades meet the southeast trades. c. northeast trades converge with the subtropical high. d. the Ferrel cell converges with the Hadley cell. e. polar easterlies converge with the air at the doldrums
Divergence in the atmosphere is best defined as:
A) air piling up in one area. B) clouds separating and dissipating. C) warm air moving away from cold air. D) air moving out of an area.
________ refers to the bright head of a comet
A) Lima B) Coma C) Toma D) Lira