AP Biologyeasymcq1 pt
Which is a density-independent factor?
A.A hurricane
B.Competition for food
C.Spread of a contagious disease
D.Predation pressure
Explanation
Core Concept
A density-independent factor affects population growth without its strength depending systematically on population density. Events such as hurricanes, freezes, or some fires can therefore be density-independent. That does not mean a hurricane must kill exactly the same proportion of individuals at every density; local exposure and habitat structure still matter.
Correct Answer
AA hurricane
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