The wave-like or meandering pattern of the upper level winds in middle latitudes is of major importance for:
A) transporting heat between equator and poles.
B) causing westerly winds.
C) causing jet streams.
D) reducing wind speeds in the tropics.
E) reducing the Coriolis effect.
A
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Why is it so easy for a magnesium atom to lose two electrons?
A. There are lots of electron-electron repulsions that go on within the valence shell. B. The nuclear charge of the magnesium atoms is relatively weak. C. These two electrons are found relatively far from the nucleus. D. These two electrons are well shielded from the nuclear charge.
A home located about 500 feet from an abandoned landfill explodes in a giant ball of flames. This is a mystery, as the home only uses electricity for cooking and heating. Most likely, this disaster was caused by ________
A) gasoline or other flammable substances that leached from the landfill into the home B) corrosives that leached from the landfill into the home and degraded the home's electrical wires C) groundwater contamination from the landfill into the home D) methane that seeped from the landfill along horizontal cracks and into the home
Which of the following is not a freshwater wetland?
A) Tidal marsh. B) Bog. C) Peatland. D) Swamp.
Palynology involves the examination of annual tree rings exposed by cores drilled through the middle of certain tree species to produce records of past climate
a. True b. False Indicate whether the statement is true or false