The WED and Soil Crossword puzzle my dude

This printable crossword puzzle on the topic of Rocks & Minerals has 13 clues. Answers range from 4 to 18 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

breaking down rocks
the process of moving sediment from one place to another
the process of a sediment being dropped off
breaking down rocks but not changing it's material
breaking down rocks and changing its material
resulting from the erosion of siliceous and other rocks
a type of weathering that contains acid
The process by which rock is reduced in size by the scraping of other rocks driven by water,wind, or gravity
the last layer of soil
formed by the decayed remains of plants and animals
the top layer of soil
a natural solid mixture of (sometimes multiple) organic matter
a loose mixture of rock fragments