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Physics 18 Online
OpenStudy (anonymous):

Plants exchange carbon dioxide, water and oxygen with their surrounding environment through openings in their what called what? the choices are A. leaves, xylem B. leaves, stomata or C. stems, sori. i will give a medal

OpenStudy (mrnood):

Take a look in your text book - you may, whilst you are reading the book find out not only the answer to this simple question but many other interesting facts about plant life.

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