On this southern continent, which side has a plate boundary?
A. both sides
B. neither side
C. the left (west) side
D. the right (east) side
Answer: C
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What describes a fish species with a narrow tolerance of temperature changes?
A) Stenohaline B) Eurythermal C) Stenothermal D) Euryhaline
Which is not a reason that fresh water wells near coastlines abruptly become salty and unusable?
A) As water is pumped from the well, the freshwater runs out and leaves only the salty water from the sea. B) Salt water is denser than fresh water, so it lays on the lower part of coastal aquifers. C) Sea water infiltrates underlying pore spaces, making ground water beneath the sea floor salty. D) As water is pumped from the well, the saltwater part of the aquifer flows up because of decreased aquifer pressure.
Science provides answers to ethical dilemmas.
Answer the following statement true (T) or false (F)
Relative to glacial mass balance, which of the following is incorrect?
A) A positive net balance occurs during a cold period, and a negative net balance occurs during a warm period. B) Glacial mass is reduced by evaporation, sublimation, and deflation. C) Glacial mass is reduced by a combination of processes called ablation. D) Worldwide, most glaciers are showing marked net increase in mass at present.