Observe how the sporophytic fern appears to unfurl upward as it grows from its rhizome
Time-lapse photography of fern growth.
Encyclopædia Britannica, Inc.
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Contunico © ZDF Studios GmbH, MainzOverview of various Pacific coral reef sharks, notably the blacktip reef shark, gray reef shark, and nurse shark.
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Encyclopædia Britannica, Inc.Overview of water moving through the hydrologic cycle, or water cycle: it evaporates from Earth's surface as water vapor, which condenses in the atmosphere, forming clouds and precipitation, which falls to the land and flows through lakes, rivers, and oceans, from which water evaporates as the cycle repeats.
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Created and produced by QA International. © QA International, 2010. All rights reserved. www.qa-international.comThe big-bang theory proposes that the universe expanded from a highly compressed state.
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Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Hiroshi Tanaka/Dreamstime.comLearn why there are limits on a tree's height but not its width; included is a discussion of the growth ring.
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Encyclopædia Britannica, Inc.Ferns, like all tracheophytes, have vascular systems to bring water up to their leaves.
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Encyclopædia Britannica, Inc.Time-lapse movement of a glacier in northern Canada.
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Encyclopædia Britannica, Inc.The growth of a long bone takes place at the epiphysis, or growth plate, where cartilage cells go through a complex sequence of growth, degeneration, mineralization, and formation of new bone tissue.
