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WAEC Biology 2025 Question 21

Question 21

Population Ecology

When Tilapia population in a pond reaches the carrying capacity, the population

  1. A.increases only.
  2. B.decreases only.
  3. C.alternately increases and decreases.
  4. D.remains unchanged.
Show the answer and explanation

Answer: C (alternately increases and decreases.)

Explanation

At carrying capacity births and deaths roughly balance, so the population goes up and down a little around that level.