In coastal areas, wind moves sand, blowing away or engulfing the soil, and eventually creating sand dunes

Sand dunes are formed by the wind, it is formed usually along the beach or desert. It is formed when the air continues to blow sand into an area behind an object. It continues to grow as grains of sand get condensed. The sand can be transported to a different location by saltation, surface creeps and by suspension where it can settle along with beach and desert in order to form dunes.

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles

c is the correct answer hope this !