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ARC-Easy / Mercury_7026933 / A student plans to grow algal colonies in solutions with different…

Problem

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question

A student plans to grow algal colonies in solutions with different concentrations of liquid fertilizer. Which is a clear and testable hypothesis to guide this investigation?

choices

  • Algae like fertilizer.
  • Fertilizer is good for algae.
  • Fertilizer improves the genetic traits of algae.
  • Algal growth rate increases with fertilizer concentration.

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