1. Pre-maganin gyaran ruwa Jikunan ruwa na halitta sau da yawa sun ƙunshi laka, yumbu, humus da sauran abubuwan da aka dakatar da ƙwayoyin cuta da ƙwayoyin cuta, fungi, algae, ƙwayoyin cuta da sauran ƙwayoyin cuta, suna da kwanciyar hankali a cikin ruwa, shine babban mahimmanci. sanadin turbidity na ruwa, launi da wari.The...
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