The main reason for the current high rate of animal extinctions is
A) uncontrolled sport hunting in the developed world.
B) commercial harvesting of wildlife in Africa.
C) drought conditions caused by the greenhouse effect.
D) habitat destruction worldwide.
E) None of these by themselves cause high rates of animal extinctions,but together they combine to cause high rates.
Correct Answer:
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Q9: Most of the species that are yet
Q10: Use the following graph to answer the
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Q12: We are usually referring to species diversity
Q13: Historically,the greatest threat to grasslands has been
A)damage
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A)North America
Q18: Use the following graph to answer the
Q19: Approximately how many species have been identified
Q20: Ecological diversity is a measure of the
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