Sam blew out through a straw and directed his breath at a pan of sand. Sam is showing the rest of his class how the wind the land.

Explanation:

When rocks gets deposited on a land then this is known as deposits rocks on. Thus, we can conclude that when Sam blew out through a straw and directed his breath at a pan of sand. Sam is showing the rest of his class how the wind erodes the land.

answer; /// the best answer to the above question is (plants);