Investigation 2

1. Rocks that are bigger than silt.
3. Pollution happens when the environment is contaminated by chemicals, and other bad things for humans.
5. removal and movement of loose earth material by wind or water.
8. living things that grow from soil and use light from the Sun for food.
10. Frozen water.
11. Wedging When plant roots breaks a rock by getting inside a rock
12. a wetland area that forms as rivers empty into a larger body of water.

1. Parts of rocks that are being carried along by wind or water.
2. Wedging When ice breaks a rock by getting inside the rock.
4. Solid earth that is made of minerals.
6. a natural flowing water, usually freshwater, flowing towards an ocean, sea, lake or another river.
7. particles that are smooth or slick; smaller than sand and silt, it is difficult to see just one
9. rocks that are smaller than sand but bigger than clay
13. Rain When pollution gets into rain water. This can break down rocks.