Asandbar is formed by water moving sediment downstream, and bare sandbars are the ideal spots for new stands of cottonwood. Given these facts, what is required for the ideal habitat for new stands of cottonwood among the following options:
- sunlight
 - nutrients
 - warmth
 - Sediment
 - Black tar
 - Hot magma
 - trees
 - Chainsaws


 

    Sediment     