The number of dead zones has ________ every decade from the1960s into the twenty-first century
A) doubled
B) tripled
C) quadrupled
D) quintupled
E) increased ten-fold
A
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________ is a byproduct of rock weathering.
A. Water B. Igneous rock C. Metamorphic rock D. Soil E. Oil
Which of the following is not a basic tenet of plate tectonics?
A. When the leading edge of a moving slab of oceanic lithosphere collides with another slab, the older, colder, denser slab turns downward and is pulled by gravity back into the asthenosphere (subduction), while the less-dense, more buoyant slab overrides it. B. The slab pulled into the asthenosphere begins the process of reabsorption into the mantle. C. The new lithosphere slowly moves laterally away from the zones of oceanic crust formation on top of the underlying asthenosphere (seafloor spreading). D. The slab pulled into the asthenosphere begins the process of melting and moves into the liquid core. E. Melted asthenosphere flows upward as magma and cools to form new ocean floor lithosphere.
Unwanted, disturbing, or harmful sound that damages, impairs, or interferes with hearing, causes stress, raises blood pressure, hampers concentration and work efficiency, or causes accidents is known as ____.
A. photochemical smog B. exurb pollution C. noise pollution D. air pollution E. urban sprawl
The development of a hurricane begins with an Arctic disturbance which is a low-pressure zone that draws in a poorly organized cluster of thunderstorms with weak surface winds.
Answer the following statement true (T) or false (F)