Biology, 22.07.2019 05:30 Lacey9319

Plz 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? a. an experiment because it tests a cause and effect relationship b. an experiment because it does not ask a testable question c. an investigation because it uses only observations d. an investigation because there is a control group

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Plz justin is planning his science fair project. he wants to measure how oxygen levels affect...