Which of the following compounds could be used to enhance cometabolism of chlorinated solvents in bioremediation?
a. nitrate
b. oxygen
c. methane
d. benzene
c
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Splitting large uranium atoms to release the energy within them is called ________ ________
Fill in the blank(s) with correct word
Which of Earth's major extinctions was the most extensive, eliminating 70 percent of all terrestrial organisms and up to 95 percent of marine organisms?
A) Cambrian Explosion B) Permian Extinction C) Cretaceous Extinction D) Late Devonian Extinction
The oceans' oldest sediments are found ________.
A. at the surface of sediment layers, far from spreading centers B. adjacent to a rift valley C. adjacent to a transform fault D. in hot spots E. on top of the basalt layer, far from spreading centers
Where are the hinges placed on a casement window?
a. side b. middle c. top d. bottom