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    Forest - Wikipedia

    • A forest is an ecosystem characterized by a dense community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' Food and Agriculture Organization (FAO) defines a forest as, "Land spanning more than 0.5 hectare… See more

    Definitions

    Although the word forest is commonly used, there is no universally recognised precise definition, with more than 800 definitions of forest used around the world. Although a forest is usually defined by the presence of trees, unde… See more

    Etymology

    The word forest derives from the Old French forest (also forès), denoting "forest, vast expanse covered by trees"; forest was first introduced into English as the word denoting wild land set aside for hunting without nec… See more

    Evolutionary history

    The first known forests on Earth arose in the Middle Devonian (approximately 390 million years ago), with the evolution of cladoxylopsid plants like Calamophyton. Appeared in the Late Devonian, Archaeopteris was … See more

    What are the benefits of forests?
    Forests have always been essential for the survival of humankind – Forests are a source of biodiversity and fresh water. They reduce risks of natural disasters like landslides and flooding. They act as a carbon sink, removing carbon dioxide from the atmosphere and storing it, thus mitigating climate change.
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    Definitions
    Etymology
    Evolutionary history
    What are the benefits of forests?
     
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