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Class 9 Science Exploration: Entering the World of Secondary Science Scientific questions and observationsHard

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A student observed more earthworms in moist soil. Which next question is most appropriate for investigating the cause?

Answer and explanation

Correct answer: How does soil moisture affect the number of earthworms in an equal area?

This question tests a measurable relationship between moisture and earthworm number. Look for controlled criteria such as equal area.

Related tags

Earthworms Soil Moisture Testable Question Scientific Questions And Observations Exploration: Entering The World Of Secondary Science Exploration Entering The World Of Secondary Science Science Class 9 Mcq

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