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WAEC Biology 2025 Question 10

Question 10

Ecosystem and Ecological Factors

The diagram below is an illustration of an ecological instrument used in a habitat. The instrument is used to measure a factor

Diagram for this question
  1. A.on land.
  2. B.on grasses.
  3. C.in the atmosphere.
  4. D.in water.
Show the answer and explanation

Answer: D (in water.)

Explanation

A Secchi disc is lowered into water to measure turbidity (how far light penetrates).