Following the Sun
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Fell, Andy. “How Sunflowers Move to Follow the Sun.” UC Berkeley College of Natural Resources, 4 Aug. 2016, nature.berkeley.edu/news/2016/08/sunflowers-move-clock.
Lin, Chentao. “Circadian Regulation of Sunflower Heliotropism, Floral Orientation, and Pollinator Visits.” F1000 – Post-Publication Peer Review of the Biomedical Literature, 2016. Science, doi:10.3410/f.726605781.793524290.
They Bark and They Bite
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Xylem and Phloem: A Plants Source and Sink
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