Notizen
Natural resources
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Seite 1
why conservation
1. to maintain ecological balance
2.to preserve different kinds of species 3. to make resources available for present and future generations 4. to ensure survival of biodiversity
Soil
soil is a renewable resource as well as a non renewable resource. It is renewable because its productivity can be maintained with fertilizers and manures rich in humus . It is non renewable as formation of soil takes hundreds of years.
Informationen
- Beschreibung
- 9th state syllabus karnataka
- Erstellt von
- Rutu Kiran · Mär 2015
- Aktualisiert
- 27 Feb 2016
- Aufrufe
- 10
- Bewertung