Which result is an observed effect of global warming on organisms?
A) Some species of birds and frogs now begin their breeding seasons earlier in the year.
B) Corals "bleach" when decreased water temperatures cause them to expel their symbiotic algae.
C) Many butterfly populations have shifted their ranges toward the equator.
D) Many polar bears produce more offspring as their hunting grounds increase in size.
Correct Answer:
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Q3: The average global temperature has risen _
Q4: The current rate of extinction may be
Q5: Carbon dioxide (CO2) in the atmosphere is
Q6: DDT and mercury
A) were once used as
Q7: Global warming is the result of
A) rising
Q9: The primary goal of conservation biology is
Q10: Which phenomenon is a likely consequence of
Q11: By the year 1980, a wolf species
Q12: The three greatest current threats to biodiversity,
Q13: Biodiversity considers
A) the genetic diversity within and
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