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ID number:781934
 
Evaluation:
Published: 17.03.2008.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Mūsu dzīve bez ūdens nav iedomājama ,jo visam dzīvajam ir vajadzīgs ūdens. Uz Zemes tas ir sastopams dažādos veidos - debesīs mākoņu veidā, jūrās sālsūdens un aisbergu veidā, ezeros un upēs. Ūdens klāj apmēram ¾ Zemes virsmas, tas ir, 71,7%. No kopējā ūdens daudzuma 95% atrodas saistītā veidā iežos un tādēļ nav pieejams lietošanai. Tikai 5% no kopējā Zemes ūdens daudzuma piedalās ūdens apritē. …

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