Which of the following is NOT true regarding the production of corn-based ethanol as an alternative to gasoline in the United States?
A. it is less energy efficient than gasoline
B. production requires a significant amount of farmland
C. it is helping to drive up food prices
D. production likely results in a net energy loss
E. provides a long-term solution to our energy needs
Answer: E
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Which of the following scenarios would be most susceptible to mass movements?
A) steep slope, underlain by siltstone and mudstone B) steep slope, underlain by sandstone and conglomerate C) shallow slope, underlain by siltstone and mudstone D) shallow slope, underlain by sandstone and conglomerate
Geologists use fossils in sedimentary rocks to assign their correct place in geologic history.
Answer the following statement true (T) or false (F)
The planets stay in orbit around the Sun because of a balance between ________ and ________
Fill in the blank(s) with correct word
The Enhanced Fujita Scale ________.
A. ranks tornadoes by their lowest achieved internal pressure B. quantifies tornado magnitude on an open-ended scale, similar to earthquake magnitude C. quantifies nor'easters based on maximum measured wind speed D. quantifies tornado magnitude based on estimated maximum wind speed E. assesses the severity of lightning strikes based on the electrical current between ground and cloud