The largest unit of living organisms on earth is?
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The largest unit of living organisms on Earth is the **biosphere**. The biosphere encompasses all the ecosystems on Earth where living organisms exist. It includes all ecosystems on land, in water (both freshwater and marine environments), and in the atmosphere where life is found.
The biosphere is composed of interacting ecosystems and communities of organisms, ranging from microorganisms to plants, animals, and humans. It represents the sum total of all living organisms and their habitats, extending from the depths of the oceans to the highest mountains and into the atmosphere.
Understanding the biosphere is crucial for studying Earth’s interconnected systems, including the cycling of nutrients, energy flow, climate regulation, and the maintenance of biodiversity.