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Food Supply System : Introduction1 m 42 s
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Food Supply System 1 : Autotrophic Nutrition1 m 8 s
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Food Supply System 2 : Autotrophic Nutrition29 s
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Food Supply System : Photosynthesis26 s
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Food Supply System : Presence of Starch in Leaves1 m 8 s
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Food Supply System : Materials Essential for the Process of Photosynthesis1 m 4 s