If the Earth had twice its present radius and twice its present mass, what change in weight would you experience?
A. One half.
B. One-quarter.
C. You'd have increased weight.
D. No change.
Answer: A
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Genetically modified bacteria use to clean up oil spills are a result of
A. genetic engineering. B. adaptation. C. isolation. D. genetic selection. E. artificial intelligence.
The concept of entropy is ultimately about
A. the arrow of time. B. energy dispersal. C. both of these D. neither of these
What partly explains the seabed topography we observe?
A) The jostling due to plate tectonics. B) The greater density of continental lithosphere. C) The presence of continental margins. D) The little interaction with the asthenosphere.
Biological invasions can occur in response to ________.
A. plate tectonics B. ballast water transport C. shifts in climate patterns D. All of these choices are correct. E. None of these choices is correct.