An example of a land feature formed by river erosion is a. alluvial fans c. soil b. deltas d. oxbow lakes

a. alluvial fans

Alluvial fan is an example of land feature formed by river erosion. It is a triangle shaped deposition of debris containing gravel, sand, silt or any other sediment collectively called as alluvium by flowing stream of water. The deposition of these sediments takes the shape of a fan on the landmass where they get settled. Alluvial fans are usually form when a stream of water flows from a landmass such as mountains or hills. This flowing water leaves the sediments on the surface of landmass.

The correct answer is option A, Alluvial fan

Explanation:

Alluvial fan is usually formed in areas with landscape developed by the deposition of silt, gravel, sand, and sometimes boulders. The way a alluvial fan is formed needs certain necessary conditions such as –  

a)Flowing water

b)Excessive sedimentation

c)Open Plain

d)Erosion and deposition due to topography change and flowing water

All these circumstances are attained in a river erosion process and thus alluvial fan can be  formed due to the process of river erosion

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

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