The time when vast numbers of species abruptly vanish is called mass-extinction event.

a. true
b. false


Ans: a. true

Environmental & Atmospheric Sciences

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Earth's atmosphere and ocean are intertwined, their gases and waters freely exchanged

a. True b. False

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The effect of ozone destruction is most severe ________.

A. at polar latitudes B. at equatorial latitudes C. at temperate latitudes D. in terrestrial desert areas E. All of these are equally affected.

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Waves with a long wavelength and long period are the most powerful. Indicate whether the statement is true or false

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