Celery stem cross-sections at 40x, 100x, and 100x, respectively:
Copyright George Naugles, 2013. All rights reserved. Permission to copy granted to current students
of Mr. Naugles only.
This photo was taken of 1mm on the microscope stage, with the micros
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It all starts with the SUN!
The Sun is our ultimate
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Called radiant energy
Energy first enters most
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Without the sun, life as we
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Autotrophs or producers are
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