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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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.)
The tidal waves portrayed to the general public are not true tidal waves
Indicate whether the statement is true or false
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.
Which of the following chemicals is least likely to irritate breathing passages?
A) ozone B) sulfur dioxide. C) nitric oxide. D) nitrogen dioxide. E) lead.