Water Resources and Pollution

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What are heavy metals?

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Heavy metals are metallic elements with high densities that are toxic or poisonous at low concentrations, such as mercury and lead.

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What are the two main problems with water?

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The two main problems with water are overuse and pollution.

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What is runoff?

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Runoff is water that flows over the ground surface and can carry pollutants from sewage, agriculture, and industries into water bodies.

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What is groundwater?

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Groundwater is water that is stored in the pores of soil, sediments, and rocks beneath the Earth's surface.

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How much of the world's surface water is drinkable?

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Less than 1% of the world's surface water is drinkable.

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What is water pollution?

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Water pollution is the contamination of water bodies, often caused by human activities, which negatively affects aquatic life and human health.

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What are the sources of water pollution?

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Sources of water pollution include industrial discharge, agricultural runoff, sewage, and plastic waste.

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What is the water cycle?

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The water cycle is the continuous process by which water evaporates, condenses, and precipitates back to the Earth.

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What is the difference between renewable and non-renewable water resources?

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Renewable water resources can be replenished naturally, while non-renewable water resources are finite and cannot be replaced within a human timescale.

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What is the significance of wetlands?

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Wetlands are important ecosystems that filter pollutants, provide habitat for wildlife, and help in flood control.