Overview: Features authoritative, peer-reviewed entries from the Encyclopedia of Sustainability Science and Technology.Covers topics ranging from atmospheric biogeochemistry to invasive species, ecosystem serviEarth is home to an estimated 8 million animal species, 600,000 fungi, 300,000 plants, and an undetermined number of microbial species. Of these animal, fungal, and plant species, an estimated 75% have yet to be identified. Moreover, the interactions between these species and their physical environment are known to an even lesser degree. At the same time, the earth’s biota faces the p
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