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ID number:165885
 
Author:
Evaluation:
Published: 10.10.2011.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Piesārņojuma veidi un avoti
Ķīmiskie piesārņojumi:

Neorganiskās vielas (skābes, sāļi, toksiskie metāli);
Sintētiskie organiskie savienojumi (mazgāšanas līdzekļi, pesticīdi, naftas produkti);
Lauksaimniecībā lietotie minerālmēsli;
Organiskās atliekas.

Fizikālie faktori:

Termiskais (siltuma) piesārņojums. Termoelektrostacijas un rūpniecības uzņēmumi ievada ūdenstilpēs siltumsārņus;
Radioaktīvie atkritumi no gaisa, zemes, ūdens.…

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