Explain how and why sea level fluctuated during the Pleistocene
What will be an ideal response?
Answer: As continental ice sheets and glaciers advanced their increase in mass was made possible by the capture of snowfall in the hydrologic cycle. Thus, the moisture was unable to flow back to the oceans for a long time. Continued oceanic evaporation meant the lowering of sea level by 130 meters at maximum. This caused the continents to increase somewhat in size and features such as the Bering Land Bridge to exist. The sea level rose as glacial melting exceeded oceanic evaporation.
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Ethanol as a fuel is produced through the fermentation of
A. sugarcane. B. corn. C. sugar beets. D. All of these are correct.
Which of these statements regarding biogeography is false?
A. Closely related species tend to be found close together, suggesting they evolved in one place and then spread. B. Island species are usually most closely related to species found on the closest mainland. C. Islands tend to be occupied by many land animals, but few or no flying ones. D. Despite their similarities, new world tropical forests and old world tropical forests are occupied by different sets of living organisms.
Moh's scale is defined on the basis of minerals that have different
A) cleavage directions. B) colors. C) hardnesses. D) shapes.
Kelp forests are an example of a(n) ____ community
A) ?estuary B) ?plankton C) ?pelagic D) ?benthic