The large agricultural yields obtained today are fundamentally dependent upon fossil fuels. Indicate whether the statement is true or false
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If ethanol production in the United States continues to increase after 2015, it will need to rely on
A) even more corn that will not be available to feed the hungry people of the world. B) second-generation biofuel using enzymes that convert cellulose to fermentable sugar. C) manure and other animal wastes to generate methane, which in turn is used to produce alcohol. D) any plant material and enzymes that convert sugars into cellulose, methane, and oxygen.
During El Niño events, trade winds in the Pacific weaken
Indicate whether the statement is true or false
Describe each of the basic elements found on most maps
What will be an ideal response?
The majority of divergent plate boundaries are associated with oceanic ridges
Indicate whether this statement is true or false.