The Mohorovicic discontinuity:
a. marks the boundary between Earth's crust and mantle.
b. has been reached by drilling in the Gulf of Mexico.
c. separates Earth's inner core from the outer core.
d. indicates a change in rock type from basalt to granite.
e. indicates a change in rock type from igneous to sedimentary.
A
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Hundreds of residents near a dormant volcano at Lake Nyos died when
A) a sudden volcanic eruption deposited thick ash over the town B) an unexpected lahar destroyed the village C) a dense cloud of volcanic gas was released D) acid rain from sulfur dioxide emissions caused widespread damage to vegetation
A system of ocean currents that circulate around the periphery of an ocean basin due to the forces of surface winds, the sun's heat, the Coriolis effect, and gravity is called ____
A) a cell B) a gyre C) a microscale current D) convection cells
Water vapor amounts are generally lower during winter because
A) stronger winds reduce the atmosphere's ability to contain water vapor B) weaker winds reduce the atmosphere's ability to contain water vapor C) colder temperatures increase the atmosphere's ability to contain water vapor D) colder temperatures reduce the atmosphere's ability to contain water vapor
Subtropical high pressure systems over colder oceans are nearly always cloudless
Indicate whether the statement is true or false