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  2. Marine ecosystem - Wikipedia

    en.wikipedia.org/wiki/Marine_ecosystem

    Mangroves are trees or shrubs that grow in low-oxygen soil near coastlines in tropical or subtropical latitudes. [8] They are an extremely productive and complex ecosystem that connects the land and sea.

  3. Ecosystem - Wikipedia

    en.wikipedia.org/wiki/Ecosystem

    An ecosystem (or ecological system) is a system formed by organisms in interaction with their environment. [2]: 458 The biotic and abiotic components are linked together through nutrient cycles and energy flows.

  4. Marine microorganisms - Wikipedia

    en.wikipedia.org/wiki/Marine_microorganisms

    Microorganisms make up about 70% of the marine biomass. [4] A microorganism, or microbe, is a microscopic organism too small to be recognised adequately with the naked eye. In practice, that includes organisms smaller than about 0.1 mm. [12]: 13

  5. 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.

  6. Starfish - Wikipedia

    en.wikipedia.org/wiki/Starfish

    Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (/ ˌ æ s t ə ˈ r ɔɪ d i ə /).Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars.

  7. Hydra viridissima - Wikipedia

    en.wikipedia.org/wiki/Hydra_viridissima

    Hydra viridissima is a species of cnidarian which is commonly found in still or slow-moving freshwater [2] in the Northern temperate zone. Hydra viridissima is commonly called green hydra due to its coloration, which is due to the symbiotic green algae Chlorella vulgaris which live within its body. [3]

  8. Freshwater ecosystem - Wikipedia

    en.wikipedia.org/wiki/Freshwater_ecosystem

    Freshwater ecosystem. Freshwater ecosystems are a subset of Earth's aquatic ecosystems that include the biological communities inhabiting freshwater waterbodies such as lakes, ponds, rivers, streams, springs, bogs, and wetlands. [1]

  9. Deep ocean minerals - Wikipedia

    en.wikipedia.org/wiki/Deep_Ocean_Minerals

    Deep ocean minerals (DOM) are mineral nutrients (chemical elements) extracted from deep ocean water (DOW) found at ocean depths between 250 and 1500 meters. DOW contains over 70 mineral nutrients and trace elements, including magnesium (Mg), calcium (Ca), and potassium (K) in their bio ionic form.