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ID number:197758
 
Evaluation:
Published: 03.09.2012.
Language: Latvian
Level: Elementary school
Literature: 5 units
References: Not used
Extract

Ūdens kvalitāte.
Izšķir vairāki faktori:
Neizšķīdušo mehānisko daļiņu daudzums.
Palielināts izšķīduša dzelzs vai mangāna saturs.
Paaugstināta kalcija un magnija sāļu satura.
Bakterioloģiskais piesārņojums.

Pārtikai un saimniecībai – atšķirīgs ūdens.
Visizplatītākās ūdens problēmas ir smagais metāls, nitrāti, pesticīdi, radionuklīdi un citas kaitīgas vielas piesārņojumas.

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