The Dust Bowl era was caused by
A. drought.
B. removal of native prairie vegetation to plant seasonal crops.
C. onset of drought.
D. All of the choices are correct.
Answer: D
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How could one test if calcite is the mineral that cements together loose grains of sandstone?
A) If it is extremely strong then it is calcite. B) If it does not react with dilute acid, then it is calcite. C) If it does react with dilute acid, then it is calcite. D) If you lick it and it falls apart, then it is calcite.
A home located about 500 feet from an abandoned landfill explodes in a giant ball of flames. This is a mystery, as the home only uses electricity for cooking and heating the home. Most likely, this disaster was caused by
A) groundwater contamination from the landfill into the home. B) biogas that seeped from the landfill along horizontal cracks and into the home. C) gasoline or other flammable substances that leached from the landfill into the home. D) corrosives that leached from the landfill into the home and degraded the home's electrical wires.
LEED-certified buildings could be described by all of the following, except ________
A) reduce the ecological footprint of the building B) energy efficient C) construction costs much less than for conventional buildings D) limit pollution and recycle wastes E) built with sustainable materials
Lead, mercury and plutonium are these that have a tendency to accumulate in organisms.
A. radioactive metals B. heavy metals C. native metals D. precious metals