rapunzel2 rapunzel2

28-10-2016
Biology

contestada

o filtro de água doméstico, que muitas pessoas usam em suas casas, deve ser lavado de tempos em tempos. Explique por quê.

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lolly04 lolly04

29-10-2016

por que se ele esta filtrando as bactérias ele precisa ser limpo das bacterias e um acao de higiene

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