Which ecosystem, park or forest, has a more complex food web?

A park is an artificial ecosystem, or an agrocenosis, and a forest is a natural one, or a biocenosis. The biocenosis is noticeably more stable and has not only a more complex, long and branched food web, but also a closed circulation of substances and energy. Also, the biocenosis includes a greater number and variety of species of living organisms. In addition, the biocenosis does not need additional energy sources and is capable of self-regulation, which makes it more resistant to changing environmental conditions.

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