During the end Permian mass extinction, the slowing of sea floor spreading resulted in an increase of the world's ocean basins, causing sea level to drop about ________.
A. 150m (492ft)
B. 100m (328ft)
C. 75m (246ft)
D. 200m (660ft)
Answer: D
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A. use a combination of an electric motor and a gasoline engine. B. use only an electric motor. C. have batteries guaranteed to last the life of the car. D. are the same price as other similar non-electric vehicles. E. are not energy efficient.
Which number and cause of bird death are incorrectly matched (for the U.S.)?
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The oldest rocks of the oceanic crust are found in deep ocean trenches far away from active, mid-ocean ridges
Indicate whether the statement is true or false