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NOVA: Season 5

5x02 The Green Machine
TV-PG

  • 1978-01-12T02:00:00Z on PBS
  • 55m
  • United States
  • English
  • Documentary
Botany is a neglected science and plants are all around us, but unfamiliar. NOVA examines our state of knowledge of how plants work: growth hormones, responses to light and shade, photosynthesis, root mechanisms and twining responses.
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