Multiple Choice
Which of these is NOT an example of biological changes that are recently occurring and attributable to warming of the northern hemisphere?
A) the elevations at which mosquitoes can survive
B) the average weight of polar bears
C) the southerly limit of reindeer in the Scandinavian countries and arctic Russia
D) the average spring date at which tree sap begins to flow
Correct Answer:
Verified
Correct Answer:
Verified
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