14. Natural Resources
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Download Free NCERT Solutions Class 9th Science Chapter 14 Natural Resources
Physical resources : Air, Water, Soil. Air for respiration, for combustion, for moderating temperatures; movements of air and its role in bringing rains across India.
Air, Water and Soil pollution (brief introduction). Holes in ozone layer and the probable damages.
Bio-geo chemical cycles in nature : Water, Oxygen, Carbon and Nitrogen.