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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