formation of sand dunes

Question 1

step 1 Windblown sand is deposited against an obstruction:

Answer 1

Pebbles or driftwood

Question 2

step 2 As more sand particles are caught, the dunes ,,,,,,,,,,

forming rows at…

Answer 2

the dunes grow in size,

forming rows at right angles to the prevailing wind

Question 3

Over time, the ridges of the dunes will be colonized and fixed by

Answer 3

vegetation this is called succession

Question 4

The first plants (pioneer species) have to deal with:

Answer 4

Salinity

Lack of moisture as sand drains quickly (highly permeable)

Wind

Temporary submergence by wind-blown sand

Rising sea levels