Landforms of coastal deposition

Question 1

in 4 steps, explain how sand dunes are formed :

Answer 1

1-sand is transported by wind
2-gathers against an obstacle
3-creates a stump of samd
4-forms an embryo dune

Question 2

what is the difference between a spit and a bar?

Answer 2

spit - when water gathers between land and open salt water

bay - water trapped behind sand, creating a pond

Question 3

1- what forms behind a spit?

2- why?

Answer 3

1- salt marsh

2- due to the water staying the and turning dirty