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Environmental Pollution: The effect of carbon dioxide on plant growthFeatured science projectScience project video


  1. Which plant grew more during the week? Did this match your expectations?
  2. Explain the difference between the water vapor for both plants between day 1 and day 7.
  3. How did the temperatures change inside the control plant bottle? What about inside the experimental bottle?
  4. Do you think the carbon dioxide helped the plant grow?
  5. Which bottle represented global warming, based on your temperature measurements?


Questions & Answers

Where will the CO2 come from in this experiment?

The vinegar and baking soda

How does global warming change the earth's temperature?

By trapping greenhouse gases beneath the atmosphere.

Plants consume ______________ _______________ and give off ___________________.

Carbon dioxide / oxygen

Make it Your Own

Consider adding water in the soda bottle in a shallow dish. Blow into the water with a straw and then quickly cover the entire system (plant, dish and thermometer). Use the same control. Consider why the environment would change by blowing into the water!


Hays, J. "How do increased CO2 levels affect plant growth?"

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    Approximately 1 hour to complete initial set-up, with 15 to 30 minutes daily observation and discussion for five days.
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