Organisms live within a range of tolerance that determines their habitat. Which of the conditions below is NOT a range of tolerance?
A)Coral polyps need a symbiotic algae living within them.
B)Desert cacti can thrive in areas with low levels of rainfall.
C)Trout populations live in areas with high dissolved oxygen content and a narrow range of temperatures.
D)Blue crabs in an estuary can tolerate wide swings of salinity and temperature.
E)Royal ferns require moist areas and are only found in wetlands.
Answer: A
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