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What is the primary difference between fresh water and salt water?

Back

Fresh water has a low concentration of dissolved salts (salinity), typically less than 1%, while salt water has a high concentration of dissolved salts, primarily sodium chloride, usually around 3.5%.

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What are the main sources of fresh water?

Back

The main sources of fresh water include rivers, lakes, glaciers, and groundwater.

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NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

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What percentage of Earth's water is fresh water?

Back

Only about 2.5% of Earth's water is fresh water.

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NGSS.MS-ESS2-4

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What is the significance of wetlands in the ecosystem?

Back

Wetlands act as natural water filters, provide habitat for wildlife, and help in flood control.

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NGSS.MS-LS2-1

Front

What is the process of desalination?

Back

Desalination is the process of removing salt and other impurities from seawater to produce fresh water.

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What is the role of freshwater ecosystems in biodiversity?

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Freshwater ecosystems support a diverse range of species, including fish, amphibians, and aquatic plants, contributing to overall biodiversity.

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NGSS.MS-LS2-4

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How does salinity affect aquatic life?

Back

Salinity affects the types of organisms that can live in a water body; freshwater organisms are adapted to low salinity, while saltwater organisms are adapted to high salinity.

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NGSS.MS-LS1-5

NGSS.MS-LS2-4

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth, involving processes like evaporation, condensation, precipitation, and infiltration.

Tags

NGSS.MS-ESS2-4

Front

What are the characteristics of freshwater habitats?

Back

Freshwater habitats are characterized by low salinity, varying temperatures, and diverse plant and animal life.

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What is eutrophication, and how does it affect freshwater systems?

Back

Eutrophication is the process by which water bodies become overly enriched with nutrients, leading to excessive growth of algae and depletion of oxygen, harming aquatic life.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

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NGSS.MS-LS2-4