Limestone is composed almost entirely of calcite which has the chemical formula CaCO3. As a result, limestone is classified as ________
A) a mineral
B) a rock
C) both a mineral and a rock
D) neither a mineral nor a rock because it is organic
B
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If you travel west through 10° of longitude along the equator, the distance traveled will be very different from the distance traveled through 10° of longitude at 60° N. Why?
What will be an ideal response?
The Saffir-Simpson scale ranks wind velocity and central air pressure from
A) storm surges. B) tornadoes. C) hurricanes. D) tropical depressions. E) wave cyclones.
Where is the water level in a well drilled into a confined aquifer?
A. Below the water table B. Above the top of the confined aquifer C. At the same level as the water table D. No way to predict
Substance(s) that qualify to be called particulate air pollutants include
A. carbon dioxide. B. ozone. C. nitrogen oxides. D. smoke.