Nova Season 4 Episode 20
Episode Title: The Green Machine
Countries:
USA,
Airing Date: January 11, 1978
Runtime:54 mins
IMDb Rating:
Watch Nova Season 4 Episode 20 full movie online free in HD with English subtitles – no download needed.
NOVA : 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.