If important habitats are formed by deposition of sediment at the mouth of a river by water fanning out, then what is formed by deposition of sediment at the mouth of a river?

Answer choices:
- A solid geometric shape
 - clouds
 - h2o
 - important habitats
 - dams
 - patch reefs
 - swamp vegetation
 - at or near the margins

 

    important habitats      