What is currently the most important threat to the survival of polar bears?
A) Pollutants driven by currents from oceans in more temperate climate zones
B) Hunting by native populations
C) Disruptions from tourism
D) Limited hunting opportunities due to less floating ice
E) Slow extinction as a result of documented global population cycles
Correct Answer:
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A) searches
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Q26: Recoveries after mass extinctions can _.
A) never
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