Conservation and Use of Natural Resources — Flashcards

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Natural resources are materials or substances provided by nature that humans use for survival and welfare. Examples include soil, air, water, minerals, forests, and sunlight. These resources can be us…

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Renewable resources can be replenished naturally over time, such as solar energy, wind energy, and forests. Non-renewable resources have limited supply and cannot be replaced once used up, like coal, …

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Soil is renewable because its fertility can be restored using manures and crop rotation. However, if topsoil is lost due to erosion, it becomes non-renewable because forming new soil takes hundreds to…

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Soil erosion is the removal of topsoil by wind or water. Causes include deforestation (removes tree roots that hold soil) and overgrazing (reduces vegetation cover, exposing soil).

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Trees anchor soil with their roots and reduce the impact of rain and wind. When forests are cut down, the soil becomes loose and exposed, making it easy for wind and water to carry it away.

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1. Afforestation – planting trees to bind soil. 2. Contour ploughing – ploughing across slopes to slow water flow. 3. Terracing – creating flat fields on hills to reduce runoff and erosion.

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Rainwater harvesting is collecting and storing rainwater for future use. One method is rooftop rainwater harvesting, where water from roofs is directed into storage tanks or recharge pits.

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Fresh water is renewable because it is continuously replenished through the hydrological cycle—evaporation, condensation, and precipitation.