Organisms that are unable to actively move laterally, instead drifting with ocean currents, are called ____
A) plankton
B) nekton
C) hadal
D) benthic
A
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Evaluate the following statement. "Coastlines are straighter when they result from relative sea-level rise than when they result from relative sea-level fall."
A) This statement is true. B) The statement is false. Sea-level fall results in straighter coastlines than sea-level rise. C) The statement is sometimes true, but depends on the type of rock involved in each case. D) The statement is sometimes true, but depends more on barrier islands than on the rise and fall of the sea. e
The interpretation of a halo around the Moon as a sign of impending rain (or snow) stems from:
A) the geometry of the Moon's size and distance. B) halos being present only when clouds are thick. C) a false weather proverb. D) the association of cirrus clouds with cyclonic storms.
It has been estimated that about ________ of the CO2 added to the atmosphere has been absorbed by seawater.
A. 5% B. 25% C. 40% D. 15%
Why is the probability of dying from a meteorite impact greater than that of dying in an automobile accident?
A) because fatal meteorite impacts are likely to occur very frequently B) because there is a high probability that any person will be hit directly by a meteorite C) because a large meteorite impact would cause a very high number of fatalities D) because there are millions of meteoroids in near-Earth orbit