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BIENVENUE À NATURAL WORLD FACTS.

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Salut et bienvenue au Projet
de Conscience Natural World Facts.

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Dans cette série,
je expliquerai l'importance

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de la protection de la nature
et ce que tu peux faire pour aider.

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À cette vidéo,
je suis accompagné par Alex Collins,

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un camarade de la nature
sur YouTube

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et biologiste à l'Université de Bristol.

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Son site est lié ci-dessous,

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Je te suggère de le visiter

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pour voir des vidéos
sur des espèces plus rares

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du monde et les moyens de les aider.

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Qu'est-ce que la Protection
du Milieu Marin ?

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La Protection du Milieu Marin est
la préservation des écosystèmes marins,

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dans le but de limiter
les dommages causés par l'homme

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et de protéger des espèces menacées.

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Les principales menaces identifiées
sont la disparition d'espèces,

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la perte des habitats,

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et les variations du rôle de l'écosystème.

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La hausse des taux d'extinction
due aux activités humaines

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a conduit à une énorme baisse
de la biodiversité,

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surtout dans les récifs coralliens,
dont 88 % sont menacés

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par les émissions excessives de CO2.

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Ces récifs sont parmi les plus importantes
réserves de biodiversité de la planète.

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Un récif se forme à partir de polypes
de corail au bout d'environ dix mille ans,

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et atteint sa pleine maturité
au bout de 30 millions d'années.

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On pense qu'il dans ce temps il

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