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Plants do indeed give off CO2, by breaking down glucose through an oxygen reacction. During the day they just happen to also emit large amounts of oxygen through photosynthesis in a completely different process. The teacher was absolutely right.
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www.answerbag.com/q_view/47811
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Photosynthesis - Wikipedia, the free encyclopedia
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Photosynthesis is a process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight. Photosynthesis occurs in plants, algae, and many species of...
en.wikipedia.org/wiki/Photosynthesis
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But, let us just work with the 53 L as a nice "average." Now, to answer the second question, how much oxygen do plants produce in an hour. Actually, I have data for how much oxygen LEAVES produce in an hour: 5 mL. If your average plant has 30 leaves, then that would be 5 ml/leaf x 30 leaves = 150 ml/plant/hour.
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www.newton.dep.anl.gov/newton/askasci/1993/biology/bio0...
www.newton.dep.anl.gov/newton/askasci/1993/biology/bio027.htm
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Experiment - Does light make plants give off oxygen? ... Test for oxygen with a glowing splint. ... How did you know a gas was being given off?
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www.kama.com.au/crc/biodiversity/elodea.html
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During the day while photosynthesis is the dominant process in leaves, carbon dioxide is taken up from the air and used in the process of making sugars, trees give off Oxygen during the day. At night, when photosynthesis does not occur - no...
http://www.blurtit.com/q1119295.html
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Subject: CAN PLANTS GIVE OFF CARBON DIOXIDE INSTEAD OF OXYGEN? ... I HAVE ALWAYS UNDERSTOOD THAT THE PHYSIOLOGY OF PLANTS WAS TO INTAKE CARBON DIOXIDE AND GIVE OFF OXYGEN. SOMEONE TOLD ME NOT TO PUT PLANTS IN MY BEDROOM BECAUSE AT NIGHT THEY RELEASE CARBON DIOXIDE INSTEAD OF OXYGEN.I DID SEE ONE POSTING ON YOUR WEBSITE...
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www.madsci.org/posts/archives/apr2001/987988349.Bt.q.ht...
www.madsci.org/posts/archives/apr2001/987988349.Bt.q.html
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Subject: Do plants absorb oxygen in the darkness and give off carbon dioxide? ... Date: Tue Nov 3 13:30:18 1998; Posted by Jay Blevins; Grade level: grad (science); School: Mountain Empire Community College; City: Big Stone Gap State/Province: Va; Country: USA; Area of science: Botany;
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www.madsci.org/posts/archives/nov98/910218268.Bt.q.html
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Plants begin their life as a seed. With water, right temperature and right location, the seed germinates. It becomes a seedling. Roots push down into the ground ... Plants give off oxygen and take in carbon dioxide given off by animals. Animals give off carbon dioxide plants need to make food, and take in oxygen to breathe.
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www.picadome.fcps.net/lab/currl/lifecycles/plants.htm
www.picadome.fcps.net/lab/currl/lifecycles/plants.htm
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Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all ... six molecules of water plus six molecules of carbon dioxide produce one molecule of sugar plus six molecules of oxygen...
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www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPS.ht...
www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPS.html
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