Soil conservation is the:
Correct answer: D. Protection against loss of soil
- A. Conversion of sterile soil into fertile soil
- B. Aeration of soil
- C. Erosion of soil
- D. Protection against loss of soil
Explanation
Soil conservation is to conserve fertile soil from losses like heavy rainfall, drainage, high wind, flood, drought etc. Soil is the top cover of the Earth in which plants can grow. The rotation of crops, contour ploughing and use of proper fertilizers help in maintaining the fertility of the soil. Plantation of trees, controlled grazing of grasslands, reforestation and prevention of forests fires will protect the erosion of topsoil. The regulation of water resources to prevent floods will help not only in soil conservation but will also supply an adequate water supply in periods of drought.
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About Man and His Environment
Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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