Weathering

2. This word has something to do with fossil fuels burning.
5. The process by which rock is broken down into smaller pieces by physical changes.
6. Can form stalagmites.
7. The breaking down and wearing away of rock material by the mechanical action of other rock.
10. The breakdown of rocks by chemical reactions.
11. Animals burrowing burrows in the ground.

1. The process by which the outer layers of rock slowly peel away due to pressure changes.
3. An example of this word is an organism growing through a crack.
4. Temperatures can change rocks to break apart.
8. A physical force on an object increasing and decreasing.
9. The breakdown of rock material by physical and chemical processes.
12. The process by which other chemical combine with oxygen.