The decline of the polar ice caps because of increasing temperatures at the poles will
A) increase the amount of fresh water available for human use.
B) decrease the largest reserve of freshwater on Earth.
C) increase the amount of freshwater available in aquifers.
D) decrease global sea levels.
B
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Although the use of wastewater effluents for irrigation can be very beneficial, it is essential that the effluents are
A) treated and free of pathogens. B) mixed in with large amounts of phosphorus. C) mixed in with large amounts of calcium carbonate. D) not used in regions contacted by humans.
What is the definition of orogenesis?
A) Subduction of an oceanic plate beneath a continental plate B) Ionic exchange between calcium and oxygen C) Emplacement of metallic ores via hydrothermal metamorphism D) Processes that collectively form a mountain belt
What geologic process triggered the Permian Extinction? Where did the trigger occur?
What will be an ideal response?
A block of ice down an incline has its maximum kinetic energy at
A. the bottom. B. half-way down. C. three-quarters of the way down. D. the top.