Freshwater as a Limited Resource
Distinguish total water, freshwater and usable water on Earth.
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Distinguish total water, freshwater and usable water on Earth.
Explain evaporation, condensation, precipitation, infiltration and groundwater formation.
Relate wells, handpumps, tube wells and aquifers to groundwater.
Connect overuse, population, pollution, deforestation and low rainfall with scarcity.
Choose practical water-saving methods at home, school, farms and communities.
Describe rooftop collection, recharge pits and storage as conservation methods.
Compare choices that waste or conserve water and predict long-term effects.
Interpret water-use scenarios and recommend sustainable actions.
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