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  2. Biotic - Wikipedia

    en.wikipedia.org/wiki/Biotic

    Biotics describe living or once living components of a community; for example organisms, such as animals and plants. Biotic may refer to: . Life, the condition of living organisms

  3. Outline of life forms - Wikipedia

    en.wikipedia.org/wiki/Outline_of_life_forms

    The following outline is provided as an overview of and topical guide to life forms: . A life form (also spelled life-form or lifeform) is an entity that is living, [1] [2] such as plants (), animals (), and fungi ().

  4. River ecosystem - Wikipedia

    en.wikipedia.org/wiki/River_ecosystem

    This stream operating together with its environment can be thought of as forming a river ecosystem. River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts.

  5. Gaia hypothesis - Wikipedia

    en.wikipedia.org/wiki/Gaia_hypothesis

    The Gaia hypothesis (/ ˈ ɡ aɪ. ə /), also known as the Gaia theory, Gaia paradigm, or the Gaia principle, proposes that living organisms interact with their inorganic surroundings on Earth to form a synergistic and self-regulating complex system that helps to maintain and perpetuate the conditions for life on the planet.