cele mai importante relatii, care se stabilesc între specii - ecosistem, parc - biotop, format din factori abiotici și biotici - biocenoza, pajiște - ecosistem artificial, format din totalitatea factorilor abiotici - ecosistem natural, formată din totalitatea factorilor biotici - pădure, ecosistem artificial in care cresc pomi fructiferi - lac, ecosistem natural - pajiste, apă stătătoare - balta, ecosistem acvatic - lumina, factor abiotic - relații de hranire, poate fi: de câmpie și de munte - livada,

Ecosistem

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