Which is the BEST cropping method for reducing erosion?
A. Growing clover continuously
B. Growing wheat continuously
C. Rotating corn, wheat and clover
D. Growing corn continuously
E. None of these is more effective in reducing erosion
Answer: C
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A 10-kg brick and a 1-kg book are dropped in a vacuum. Acceleration of the 10-kg brick is
A. the same as that of the 1-kg book. B. zero. C. 10 times that of the 1-kg book. D. 5 times that of the 1-kg book.
Dr. James Hansen of NASA has stated that we should set a goal of keeping CO2 levels below 350 ppm. Which year did we first exceed that level? If we decreased CO2 levels at the same rate that we have increased them over the past 10 years, how long would it take until CO2 levels were again below 350 ppm?
What will be an ideal response?
Fluvial deposits are considered part of the transitional sedimentary environment. Indicate whether the statement is true or false
Should environmentally responsible waste management practices be a priority on your college campus—even if they come at a cost?
a. Yes. Both our campus and the environment benefit from recycling, composting, and other environmentally friendly initiatives. b. Yes, but I think students should take an active role in making decisions about waste management and in promoting programs that are sustainable. c. No. I think that campus waste should be managed in the cheapest way possible. d. I have no opinion.