What is ecosystem? Describe the structure of ecosystem with neat diagram.

ecosystem, the complex of living organisms, their physical environment, and all their interrelationships in a particular unit of space.

An ecosystem can be categorized into its abiotic constituents, including minerals, climate, soil, water, sunlight, and all other nonliving elements, and its biotic constituents, consisting of all its living members. Linking these constituents together are two major forces: the flow of energy through the ecosystem and the cycling of nutrients within the ecosystem. Ecosystems vary in size: some are small enough to be contained within single water droplets while others are large enough to encompass entire landscapes and regions .

The fundamental source of energy in almost all ecosystems is radiant energy from the Sun. The energy of sunlight is used by the _______ _____ ________ ____ _____ _____ _________ ___ _______.
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