A delta is formed by deposition of sediment at the mouth of a river by water fanning out.
Deltas and estuaries are important habitats.
Important habitats are formed by deposition of sediment at the mouth of a river by water fanning out.
what is formed by deposition of sediment at the mouth of a river?

a. A solid geometric shape
b. clouds
c. h2o
d. important habitats
e. dams
f. patch reefs
g. swamp vegetation
h. at or near the margins