From the miniscule structure of an element to the sweeping scale of an entire forest, questions surrounding life are as diverse and compex as ecosystems themselves. In From the Horse's Mouth, the category "Life" refers to ecosystems and all the components--plants, animals, microscoorganisms, and minerals--that drive them.  Ecosystems are intertwined with human life and all natural systems, such as the water cycle, nutrient cycles, and even climate and the atmosphere. To explore what global change might mean for life on this planet, take a look below at some key topics and questions.

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