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Discuss how human activity can have both positive and negative impacts on soil. - Leaving Cert Geography - Question 16 - 2020
Question 16
Discuss how human activity can have both positive and negative impacts on soil.
Worked Solution & Example Answer:Discuss how human activity can have both positive and negative impacts on soil. - Leaving Cert Geography - Question 16 - 2020
Step 1
Positive Impacts of Human Activity on Soil
Answer
Human activities can lead to various positive impacts on soil, particularly through practices that enhance soil fertility and structure.
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Agricultural Practices: Sustainable farming techniques, such as crop rotation and organic farming, can improve soil health. Crop rotation helps in replenishing nutrients and preventing soil degradation.
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Soil Conservation: Efforts like afforestation and afforestation help prevent soil erosion. Trees and vegetation cover act as barriers against wind and water erosion, protecting the topsoil.
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Organic Matter Addition: The incorporation of organic matter, like compost and green manures, enhances soil structure, increases moisture retention, and supports beneficial microbial activity.
Step 2
Negative Impacts of Human Activity on Soil
Answer
Conversely, human activities can have detrimental effects on soil quality and health.
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Industrial Pollution: Industrial activities can lead to soil contamination from heavy metals and chemicals, significantly reducing soil fertility and posing hazards to plant and animal life.
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Deforestation: Clearing forests for agriculture or urban development leads to soil erosion and degradation. Without tree cover, the soil is more susceptible to erosion by wind and water.
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Overuse of Chemicals: The excessive use of fertilizers and pesticides can result in soil acidification and nutrient depletion. This can create imbalances in soil ecosystems, harming beneficial organisms.