sediment

This is a component of sediment.

This is a component of sediment.

This is the correct answer. Sunlight is not a component of sediment.

This is a component of sediment.

This is incorrect. Sediment reduces water clarity.

This is incorrect. Sediment does not directly influence water temperature.

This is the correct answer. Sediment makes water cloudy, reducing light penetration.

This is incorrect. Sediment can deplete oxygen levels in water.

This is a water treatment process.

This is a water treatment process.

This is the correct answer. Distillation is a different water treatment process used for purification.

This is a water treatment process.

This is incorrect. Sediment can reduce soil fertility.

This is incorrect. Sediment can hinder plant growth.

This is the correct answer. Sedimentation contributes to erosion and loss of topsoil.

This is incorrect. Sediment can clog soil pores and reduce drainage.

This is incorrect. Deforestation increases sediment runoff.

This is incorrect. Urban sprawl increases impervious surfaces, leading to more sediment runoff.

This is the correct answer. Cover cropping helps protect soil from erosion and minimize sediment runoff.

This is incorrect. Bare soil is more prone to erosion, leading to higher sediment runoff.

**Possible causes of sediment runoff:** * **Intensive tillage:** Frequent tilling can break up soil structure and make it more vulnerable to erosion. * **Lack of cover crops:** Bare soil is more susceptible to wind and water erosion, leading to higher sediment runoff. * **Heavy rainfall events:** Intense rain can overwhelm the soil's ability to absorb water, leading to increased runoff. * **Steep slopes:** Slopes are more prone to erosion, especially when coupled with other factors. **Sustainable practices to address the causes:** * **No-till or reduced tillage farming:** This minimizes soil disturbance and helps maintain soil structure, reducing erosion. * **Cover cropping:** Planting cover crops during the off-season protects the soil from erosion and improves soil health. * **Riparian buffers:** Establishing vegetation along stream banks helps filter runoff and trap sediment before it reaches the river. * **Contour farming:** Planting crops along the contour of the land reduces water flow velocity and erosion. **Monitoring effectiveness:** * **Sediment sampling:** Collect sediment samples from the river at regular intervals to track changes in sediment levels. * **Water quality monitoring:** Analyze water samples for turbidity, nutrient levels, and other parameters to assess the impact of sediment reduction efforts. * **Visual observation:** Monitor the river for visible signs of sediment reduction, like clearer water and reduced bank erosion.