The extent of the continental shelf, an underwater extension of continental crust from shoreline to basin, varies due to fluctuations in sea level. When sea level is lower, the continental shelf is

A) is narrow because less of the continental shelf is exposed.
B) is narrow because less of the continental shelf is submerged.
C) wider because some of the continental land would be submerged.


Answer: B

Physics & Space Science

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An electric heater draws an average power of 1100 watts when plugged into a 110 V rms outlet. Calculate the resistance of the heater and the rms current.

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In the nucleus, the maximum number of neutrons in a neutron energy level is (are) ______ and the maximum number of protons in a proton energy level is (are) ______.

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