13. fossils are: a remains, impressions, or traces of living creatures that are preserved by geological processes b stones and other materials that have been modified by past human activity c theoretical reconstructions of ancient species, such as dinosaurs and neandertals d geological formations that imitate the shapes of living creatures
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Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes. b. it burns more cleanly than crude oil products. c. scientists have developed new ways of extracting it. d. during its extraction, groundwater can be contaminated.
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Which statement accurately contrast archaebacteria with eubacteria
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Which of the timelines above correctly shows the order of historical events on the african continent? a. one (1) b. two (2) c. three (3) d. four (4)
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13. fossils are: a remains, impressions, or traces of living creatures that are preserved by geolog...
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