Along coastlines, sand dunes will most often begin to form and grow when ________
A) diverse grasses and woody shrubs thrive
B) annual plants become established
C) birds carry tree seeds to the area, which then become established
D) erosion and subsequent deposition bring in the necessary sand
E) perennial grasses become established
Answer: E
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Large quantities of which of the following substances are injected into a thunderstorm as the primary method for preventing the growth of large, destructive hailstones?
A. silver iodide B. hydrophobic nuclei C. ice crystals D. dry ice
Upper-air maps are commonly drawn for all the following pressures, EXCEPT:
A) 1000 millibars. B) 200 millibars. C) 500 millibars. D) 850 millibars. E) 700 millibars.
India's improvements in food production and health care have
A) brought India the levels of development equal to most industrialized countries. B) been offset by tremendous growth in population size. C) resulted in literacy rates above 80% for women. D) resulted in most people employed in high-tech jobs in the cities.
Which of the following is not an example of individuals and communities working to mitigate climate change?
A) Tree planting in exchange for greenhouse gas credits B) Leaving the decision-making to elected officials C) Farmers using no-till agriculture D) Protecting and restoring natural habitats E) Using renewable energy sources