Coal is composed of
A) petrified wood.
B) buried plant material that has partially decayed.
C) buried animal material that has partially decayed.
D) a combination of oil-rich sediments and calcareous ooze.
B
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Newton's second law focuses on
A. acceleration. B. speed. C. velocity. D. none of the above
The economy of Turkmenistan rests largely on what energy export?
A) oil B) natural gas C) uranium D) coal E) hydropower
Chronic pesticide exposure has been clearly linked to
A) malaria and bubonic plague. B) viral outbreaks. C) cancer, neurological disorders, and infertility. D) heart disease and strokes.
Provide a reason why some scientists believe the Pleistocene is over and a reason why other scientists believe we are now in an interglacial stage. Why hasn't this controversy been solved?
What will be an ideal response?