Earth’s systems are connected, and a change in one system can influence the entire system. What do we call interactions that amplify the effects of change?
A. Positive feedback loops.
B. Negative feedback loops.
C. Enmeshment.
D. Displacement.
Ans: A. Positive feedback loops.
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Oceanic crust is primarily composed of ____________, a heavy dark colored rock composed mostly of oxygen,
silicon, magnesium, and iron. Fill in the blank(s) with the appropriate word(s).
Though it would be cheaper and more effective to protect watersheds around water sources rather than building treatment facilities, no major city has made the attempt to do so.
Answer the following statement true (T) or false (F)
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The application of the precautionary principle to a commercial fishery whose primary catch species is in decline would result in
A) many years in which no fish are harvested at all. B) an optimal population size that is just about the maximum sustainable yield. C) a total allowable catch above the best estimate of the maximum sustainable yield. D) a total allowable catch below the best estimate of the maximum sustainable yield.