Answered

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Justin is planning his science fair project. He wants to measure how oxygen levels affect the rate of photosynthesis in plants. Is this an example of a scientific investigation or an experiment? (5 points)
An experiment because it tests a cause and effect relationship
An experiment because it does not ask a testable question
An investigation because it uses only observations
An investigation because there is a control group

Sagot :

Answer:

The 3rd Option

Explanation:

Simple for this question, C: an investigation because it uses only observations.

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