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an omnivorous animal (e.g., gray crow, brown bear, pig).

ecosystem disposed overland (e.g., oak forest, meadow, steppe).

plants settling on other plants, but not parasitizing on them (e.g., many orchids, glues).

processes of an internal genesis caused by internal reasons (e.g., disintegration of radio-isotopes, earthquake, volcanism).

gases exhausted by the internal combustion engines. Automobile E.g. – one of the basic reasons of the atmosphere contamination.

[Greek bios — life and genos — origin, genesis] — processes generated by a living matter and related to it. (e.g., biogenic cycle).