In terms of inputs of matter, the Earth is a closed system. As a result, nutrients must be recycled to support life.

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The Earth is a closed system in terms of matter, meaning that matter is not exchanged with the surrounding environment. Therefore, nutrients must be recycled within the system for life to be sustained. This is why the nutrient cycle, such as the carbon and nitrogen cycles, are essential for the functioning of ecosystems.

In Terms of Inputs of Matter, the Earth Is a Closed