Human impact: A farmer applies excess fertilizer before a heavy rainstorm. Predict how the phosphorus cycle...

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5. Human impact: A farmer applies excess fertilizer before a heavy rainstorm. Predict how the phosphorus cycle and a nearby lake might be affected. Explain at least two consequences.
6. Systems thinking: Explain how deforestation can affect both the carbon cycle and the water cycle. Include at least one environmental consequence.

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Excess fertilizer can lead to runoff into the nearby lake, increasing phosphorus levels. This can cause eutrophication, leading to algal blooms that deplete oxygen in the water, harming aquatic life. Additionally, the increased phosphorus disrupts the natural nutrient balance, affecting the lake's ecosystem.
Deforestation reduces the number of trees that absorb carbon dioxide, increasing atmospheric CO2 levels and contributing to climate change. It also disrupts the water cycle by reducing transpiration, leading to altered rainfall patterns and potentially causing soil erosion. An environmental consequence is the loss of biodiversity due to habitat destruction.

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Human impact: A farmer applies excess fertilizer before a heavy rainstorm. Predict how the phosphorus cycle...

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