Human Impacts on Soil and Water Test

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What are PFAS?

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PFAS (Per- and polyfluoroalkyl substances) are a group of man-made chemicals used to make products resistant to water, grease, and stains. They are found in items like non-stick cookware, water-repellent clothing, and some dental floss.

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What is Horizon A in soil?

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Horizon A, also known as the topsoil, is the uppermost layer of soil that contains the most nutrients and organic matter, making it essential for plant growth.

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Why are NC coastal rivers important?

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NC coastal rivers are important because they contain estuaries, which are rich fish nurseries that support diverse aquatic life and contribute to the ecosystem.

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What type of pollution is caused by untreated sewage?

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Untreated sewage causes biological pollution, specifically the introduction of pathogens that can harm human health and aquatic ecosystems.

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What are U-shaped valleys?

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U-shaped valleys are formed by the erosion of glaciers, characterized by their wide, flat bottoms and steep sides, indicating past glacial activity.

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What is the impact of PFAS on the environment?

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PFAS can contaminate water sources and accumulate in the environment, posing risks to human health and wildlife due to their persistence and potential carcinogenic effects.

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What role does topsoil play in agriculture?

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Topsoil is crucial for agriculture as it provides essential nutrients, supports plant roots, and retains moisture, which are vital for crop growth.

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What are the characteristics of estuaries?

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Estuaries are coastal areas where freshwater from rivers meets and mixes with saltwater from the ocean, creating unique ecosystems that support diverse wildlife.

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What is biological pollution?

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Biological pollution refers to the introduction of harmful microorganisms, such as bacteria and viruses, into the environment, often through sewage or agricultural runoff.

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How do glaciers shape the landscape?

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Glaciers shape the landscape through processes of erosion and deposition, creating features like U-shaped valleys, moraines, and fjords.