​An ECOSYSTEM ​is a community of living things that interact with each other and their habitat.​

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TYPES:

• Aquatic ecosystem

  • Marine ecosystem

    • Large marine ecosystem

  • Freshwater ecosystem

    • Lake ecosystem

    • River ecosystem

    • Wetland

• Terrestrial ecosystem

  • Forest

  • Littoral zone

  • Riparian zone

  • Subsurface lithoautotrophic microbial ecosystem

  • Urban ecosystem

  • Desert

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Examples:

• Tundra : The tundra biome is at the top of the world -- around the North Pole. Below a thin layer of tundra soil is a permanently frozen layer of ground. During the brief summers, the top section of the soil may thaw just long enough to allow plants and microorganisms to grow and reproduce.    

• Forest : A dense growth of trees, plants covering a large area. It rains a lot .

• ​Desert :    Arid land with usually sparse vegetation. 

• Sea : A great body of salt water that covers much of the earth.

• Jungle : An impenetrable thicket or tangled mass of tropical vegetation.

• Arctic : Life in the Arctic includes organisms living in the ice, zooplankton and phytoplankton, fish and marine mammals, birds, land animals, plants, and human societies.

• ...

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