Corn-based ethanol production has a number of drawbacks, including ________
A) substantial inputs of fossil fuel energy
B) depletion of fresh water
C) increased use of pesticides
D) increased use of fertilizers
E) all of the above are drawbacks of corn-based ethanol production
E
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Greatly accelerated extinction rates resulting in marked decrease in biodiversity are ____
a. transgressions b. regressions c. mass extinctions d. evolutionary nonstarters e. evolutionary starters
What term describes air aloft that changes speed or direction?
A) sea breeze B) long wave C) wind shear D) macroscale circulation
Why are flash floods more common in dry climates than wet climates?
a. ?The rainfall intensity is greater. b. ?Individual storms last longer. c. ?The soil is less permeable. d. ?The river channels are not as deep. e. ?The channel gradients are steeper, so the water flows faster.
Which of the following is the most toxic nerve agent?
a. Soman b. VX c. Sarin d. Tabun