Arnas aparatua

Eman diogu jada hasiera 5.gaiari “Firin -Faran airea dantzan deitzen den horri.

Bideo honek arnas aparatuak gure gorputzean betetzen  duen funtzioa azaltzen digu.

Orain ulertzen dugu zergatik hilko ginatekeen arnasarik hartu gabe???

Utzi erantzun bat

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