Give an example of a positive feedback loop and explain the process.
What will be an ideal response?
Answers may vary.?Melting sea ice is one positive feedback loop. As sea ice melts, there is less light-colored ice to reflect sunlight, so more sunlight is absorbed, which warms the water and air and causes more melting.
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Which of the following is not believed to be a negative impact related to the fracking of shale deposits to produce natural gas?
A. landslides B. surface water contamination C. earthquakes D. groundwater contamination
Which characteristics distinguish a law from a theory? Check all that apply.
A. A law begins as a testable hypothesis. B. A law may be demonstrated mathematically. C. A law is a statement of fact. D. A law is only an explanation of observations. E. A law is accepted as true based on a few experiments with similar results.
The oil spill resulting from the 2010 Deepwater Horizon disaster ________
A) resulted in a permanent ban on all offshore drilling in U.S. coastal waters B) was quickly cleaned up, preventing loss of wildlife and damage to fisheries along the Gulf Coast C) eclipsed all non-point oil spills by 500% D) is considered a minor incident compared to other oil spills E) is the largest accidental oil spill in world history
Turkmenistan is a major exporter of what crop?
A) corn B) opium C) soy D) cotton E) wheat