Answer the following question given this paragraph: 

Fine-grained mud in the deep ocean comes from silts and clays brought from the land by wind. The particles are deposited on the sea surface. they slowly settle to the deep ocean floor, forming brown, greenish, or reddish clays. Volcanic ash may also settle on the seafloor.


Q: Fine-grained mud in the deep ocean comes from silts and clays brought from the land by?


A:
wind