L'ECOSISTEMA
elementi
FATTORI ABIOTICI
TEMPERATURA
PRECIPITAZIONI
IRRAGIAMENTO
SUOLO
FATTORI BIOTICI
ESSERI VIVENTI
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PIANTE
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ANIMALI
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MICRORGANISMI
cos'è
tipi
ECOSISTEMI ARIFICIALI
RURALI
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INDISTRIALI
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URBANI
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AGRICOLI
ECOSISTEMI NATURALI
ECOSISTEMI ACQUATICI
acqua dolce
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LAGHI
FIUMI
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STAGNI
acqua salata
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MARE
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OCEANO
ECOSISTEMI TERRESTRI
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PRATERIE
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FORESTE
DESERTI
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FREDDI
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CALDI
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POLARE
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SAVANE
TUNDRE