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JAMB Biology 2003 Question 30

Question 30

Population Ecology

A density-dependent factor that regulates the population size of organisms is

  1. A.Disease
  2. B.Sudden flood
  3. C.Drought
  4. D.Fire outbreak.
Show the answer and explanation

Answer: A (Disease)

Explanation

Disease spreads more easily when organisms are crowded together, so its effect grows with population density. Floods, droughts and fires strike whatever the population size.