The ideal crop for producing fuel to make gasohol would:
A) be able to grow on low-quality land and have all its parts capable of being converted to ethanol.
B) be able to be very productive when grown on land that could be irrigated and fertilized.
C) be able to be grown close to petroleum refineries to make it easy to combine the ethanol with gasoline.
D) be able to naturally convert the sugars in its seeds to ethanol.
Question 2The rural/urban interface:
A) allows the best land for growing plants to be reserved for agricultural purposes.
B) are changes as populations move outward from the central urban areas.
C) allows more of the urban population to gain awareness of agricultural practices.
D) are nowadays easily seen as a distinct line in aerial views of cities and towns.
Question 3Convergent and divergent global air currents:
A) determine the maximum height a plant can attain.
B) bring dry conditions and rainfall, respectively.
C) bring rainfall and dry conditions, respectively.
D) are the result of the location of mountain ranges.
Question 4Alexander von Humboldt was the first to notice that:
A) ocean currents brought oxygen to ocean plants.
B) similar vegetation grew in areas with similar climate around the globe.
C) vegetation was distinctly different all around the globe.
D) tectonic plates caused the volcanoes that brought plant nutrients from the earth's core to the surface.
Question 5Cultivation is:
A) the history of agriculture. B) the harvesting of plants.
C) the purposeful growing of plants. D) the process of educating people about plants.
Question 6Life cycles of petfood products are becoming
A. Longer
B. Shorter
C. More and more stable
D. Inversely related to production costs
E. None of the above
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