According to the material, silting can occur when which action is taken?

According to the material, silting can occur when which action is taken?

• A. Trees are removed, increasing soil flow and causing floods
• B. Trees are planted to stabilize soil
• C. Sediment deposition reduces water flow
• D. Increased rainfall alone causes silting

Answer: (A)

Silting happens when sediment from the land builds up in water bodies. When trees are removed, soil loses a key stabilizing force. Without tree roots to hold the soil in place and with less interception of rain, rainfall and surface runoff wash more soil into streams and rivers. That extra sediment then settles in the water, gradually filling in channels and reducing flow—this buildup is silting. Planting trees would help prevent silting by stabilizing the soil, so that option wouldn’t trigger silting. While heavier rainfall can contribute to erosion, the material points to removing trees as the action that most directly leads to sediment entering waterways and causing silting.

Silting happens when sediment from the land builds up in water bodies. When trees are removed, soil loses a key stabilizing force. Without tree roots to hold the soil in place and with less interception of rain, rainfall and surface runoff wash more soil into streams and rivers. That extra sediment then settles in the water, gradually filling in channels and reducing flow—this buildup is silting. Planting trees would help prevent silting by stabilizing the soil, so that option wouldn’t trigger silting. While heavier rainfall can contribute to erosion, the material points to removing trees as the action that most directly leads to sediment entering waterways and causing silting.