See a Chinese witch hazel (Hamamelis mollis) blooming
Time-lapse video of Chinese witch hazel (Hamamelis mollis) flowers opening over a seven-day period.
Video by Neil Bromhall; music, Markus Staab/Musopen.org (A Britannica Publishing Partner)
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Encyclopædia Britannica, Inc.Understanding energy flow in ecosystems.
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© MinutePhysics (A Britannica Publishing Partner)Is it ROYGBV or ROY G. BIV?
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Encyclopædia Britannica, Inc.Artemis II is sending human organs around the Moon. Why?Media Editor: Lauren Sims
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Encyclopædia Britannica, Inc.Plants can reproduce asexually in a variety of ways. Learn about bulb, gemma, plantlet, and cutting forms of asexual plant reproduction.
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Encyclopædia Britannica, Inc.An overview of the role greenhouse gases play in modifying Earth's climate.
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Encyclopædia Britannica, Inc.Gymnosperms dominated the plant world until they were replaced by the more advanced flowering plants known as angiosperms.
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Encyclopædia Britannica, Inc.Chloroplasts play a key role in the process of photosynthesis. Learn about photosynthesis's light reaction in the grana and thylakoid membrane and dark reaction in the stroma.
