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Most of these chemicals are non-biodegradable and reach human bodies through water. Water pollution can be controlled by treating these effluents suitably before releasing them in water bodies. Forestandothervegetationcoverslowthe surface runoff and replenish underground water. Water harvesting is another method to save surface runoff. The canals used for irrigating field should be properly lined to minimise losses by water seepage. Sprinklers effectively irrigate the area by checking water losses through seepage and evaporation. In dry regions with high rates of evaporation, drip or trickle irrigation is very useful. The valuable water resource Fig 2.9: A Water Sprinkler can therefore be conserved by adopting these means of irrigation. Do you know? Rain water harvesting is N atural V egetation and W ildlife the process of Some school children were visiting an exhibition on collecting rain handicrafts. The articles in the exhibition were collected water from roof from different parts of the country. Mona picked up a bag tops and directing it to an appropriate and exclaimed, “This is a beautiful handbag!” “Yes, it location where is made from Jute,” the teacher said. “Do you see those it is stored for baskets, lamp shades and chairs? Those are made of future use. On an canes and bamboos. In the eastern and north eastern average, one spell humid regions of India, bamboo grows in plenty.” Jassy of rain for two was excited to see a silk scarf. “See this beautiful hours is enough to scarf”. The teacher explained that silk is obtained from save 8,000 litres of water. silk worms that are bred on Mulberry trees. The children understood that plants provide us with many different products that we use in our day-to-day life. Natural vegetation and wildlife exist only in the narrow zone of contact between the lithosphere, hydrosphere and atmosphere that we call biosphere. In the biosphere living beings are inter-related and interdependent on each other for survival. This life supporting system is known as the ecosystem. Vegetation and wildlife are valuable resources. Plants provide us with timber, give shelter to animals, produce oxygen we breathe, protects soils so Fig 2.10: Silk Worms Lan, oi, Wate, NaturaVegetation aWdildliResources 15 2024-25