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  • A functioning community of nature that includes fauna and flora together with the chemical and physical environment with which they interact. Ecosystems vary greatly in size and characteristics; an ecosystem can be a mud puddle, a field or orchard, or a forest. An ecosystem provides a unit of biological study and can be a unit of management.
  • a group of organisms with specific relationships between themselves and a particular environment. Source: Anthromorphemics
  • The organisms in a plant population and the biotic and abiotic factors which impact on them.

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