River Basin

What is the significance of estuaries?

• They serve as nurseries for many marine species and filter pollutants.

• They are primarily used for shipping and transportation.

• They are areas where freshwater meets saltwater, but have no ecological importance.

• They are only important for recreational activities.

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What is the primary function of wetlands?

• To filter pollutants and provide habitat for wildlife.

• To serve as a recreational area for humans.

• To increase urban development and infrastructure.

• To store excess rainfall and prevent flooding.

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What is the importance of preserving wetlands?

• They help maintain biodiversity and protect against flooding.

• They are primarily used for agricultural purposes.

• They serve as a source of drinking water for urban areas.

• They are mainly recreational areas for tourism.

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What is the distribution of water on Earth?

• 50% freshwater, 50% salt water

• 3% freshwater, 97% salt water

• 10% freshwater, 90% salt water

• 25% freshwater, 75% salt water

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What is a watershed?

• A type of plant that grows near water

• Land that water flows over and through

• A method of water purification

• A geographical area with no water sources

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What is the role of a watershed in the water cycle?

• It collects and channels precipitation to rivers and lakes.

• It filters pollutants from the water before it reaches the ocean.

• It stores water underground for future use.

• It prevents flooding by absorbing excess rainfall.

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What is the water table?

• The upper surface of the zone of saturation in an aquifer.

• The level at which groundwater is found in a well.

• The boundary between the saturated and unsaturated zones of soil.

• The point where water flows out of the ground naturally.

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What is runoff?

• Water that flows over the ground surface to rivers and lakes.

• Water that evaporates from the surface of the soil.

• Water that is absorbed by plants and trees.

• Water that is stored in underground aquifers.

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What are the transition zones between dry areas of land and bodies of water called?

• Wetlands

• Deserts

• Grasslands

• Savannas

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What is the impact of climate change on river basins?

• It can alter precipitation patterns and increase flooding or drought.

• It has no significant impact on river basins.

• It only causes droughts in river basins.

• It improves water quality in river basins.

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