Final answer:
Increasing the slope of land affects soil formation by increasing water flow, which leads to erosion and loss of fertility.
Step-by-step explanation:
Increasing the slope of land affects soil formation by increasing water flow. When the slope is steep, water runs off more quickly, carrying away nutrients and topsoil. As a result, the soil becomes less fertile and less suitable for plant growth. This is known as erosion. Conversely, land with a gentle slope allows water to infiltrate the soil, promoting the accumulation of nutrients and supporting healthier plant growth.
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