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  2. Aquatic ecosystem - Wikipedia

    en.wikipedia.org/wiki/Aquatic_ecosystem

    An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms—aquatic life—that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. [1]

  3. Quiz Your Kids with These Fun Trivia Questions - AOL

    www.aol.com/quiz-kids-fun-trivia-questions...

    To see how your kids respond to trivia, keep reading to find dozens of kids' trivia questions spanning topics of science, math, art, and more. Q: What species of bird can fly backward? A: The ...

  4. Underwater environment - Wikipedia

    en.wikipedia.org/wiki/Underwater_environment

    Marine ecosystems are the largest of Earth's aquatic ecosystems and are distinguished by waters that have a high salt content. Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply [22] [23] and 90% of habitable space on Earth. [24] Marine ecosystems include nearshore systems, such ...

  5. Aquatic science - Wikipedia

    en.wikipedia.org/wiki/Aquatic_science

    Aquatic science is the study of the various bodies of water that make up our planet including oceanic and freshwater environments. [1] Aquatic scientists study the movement of water, the chemistry of water, aquatic organisms, aquatic ecosystems, the movement of materials in and out of aquatic ecosystems, and the use of water by humans, among other things.

  6. Marine ecosystem - Wikipedia

    en.wikipedia.org/wiki/Marine_ecosystem

    Coral reefs form complex marine ecosystems with tremendous biodiversity. Marine ecosystems are the largest of Earth's aquatic ecosystems and exist in waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content.

  7. Aphotic zone - Wikipedia

    en.wikipedia.org/wiki/Aphotic_zone

    The aphotic zone (aphotic from Greek prefix ἀ-+ φῶς "without light") is the portion of a lake or ocean where there is little or no sunlight.It is formally defined as the depths beyond which less than 1 percent of sunlight penetrates.

  8. Portal:Marine life - Wikipedia

    en.wikipedia.org/wiki/Portal:Marine_life

    Marine biology is the scientific study of the biology of marine life, organisms that inhabit the sea.Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy.

  9. Photic zone - Wikipedia

    en.wikipedia.org/wiki/Photic_zone

    Aquatic ecosystems; Wild fisheries; The photic zone (or euphotic zone, epipelagic zone, or sunlight zone) is the uppermost layer of a body of water that receives ...

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