Which of the following is INCORRECT relative to the Pleistocene Epoch?
A) It represents a single, continuous cold spell.
B) The ice sheets disappeared approximately 7,000 years ago.
C) In some areas the ice sheets were more than 2 km (1.2 mi) thick.
D) It began 1.65 million years ago.
A
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Fossils fuels that have not been extracted do not have any significant affect global warming. True or false?
Indicate whether this statement is true or false.
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A) ozone B) sulfur dioxide. C) nitric oxide. D) nitrogen dioxide. E) lead.
The common mineral ________ is an example of an isolated silica tetrahedron structure.
A. pyroxene B. amphibole C. olivine D. feldspar E. mica (biotite, muscovite, etc.)