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ID number:547619
 
Author:
Evaluation:
Published: 16.04.2009.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Slāpeklis dabā
Dabā slāpeklis ir sastopams atmosfērā, kur tā ir galvenā gaisa sastāvdaļa.
Slāpeklis ir visu augu un dzīvnieku olbaltumvielu sastāvdaļa. 16% no visas augu olbaltumvielu masas ir slāpeklis.
Tas atrodams akmeņoglēs un kūdrā.
To satur arī daži minerāli, piemēram, Čīles salpetris NaNO3 un kālija nitrāts KNO3 jeb Indijas salpetris.

…

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