Praxis Middle School Science Practice Questions - Praxis Middle School Science (5442) Exam

Which of the following is the best example of a controlled experiment?

Two identical plant groups receive different amounts of water while all other conditions are kept the same One plant is observed in a forest over a year with no manipulation Students survey classmates about their favorite plants A scientist reads articles about plant growth and summarizes them

Correct Answer:

Two identical plant groups receive different amounts of water while all other conditions are kept the same

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