Phytoremediation is a form of bioremediation that
a. is essentially the same, but more costly
b. involves the use of photosynthetic bacteria
c. produces more air pollution and is thus not as helpful
d. involves the use of plants
e. can only work on toxic metal leachate
D
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If you were a land planner, what questions could you answer by using the composite overlay of data layers in Figure 30.1?
What will be an ideal response?
Strong evidence for evolution comes from the field of ____________________, which studies the geographic
distribution of ancient and present-day organisms. Fill in the blank(s) with the appropriate word(s).
Judge the following sentence according to the criteria given below: Thick sediment accumulations occur on the continental shelves and rises, especially near the mouths of major rivers BECAUSE these locations are close to major sources of lithogenous
sediment. A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
________ currents are bottom currents that flows parallel to the slopes of the continental margin.
A. Gulf Stream B. Abyssal C. Contour D. Turbidity E. Newfoundland