CDA Science 1

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Across

2. material is laid down

5. replaces nutrients

9. too hard to streak

10. weathered rocks and decomposed organic material

11. layers of soil

13. not at Earth's surface - under the earth

Down

1. topsoil washes away

3. soil eroded by exposure to wind and water

4. melting crayons

6. mineral's hardness tested using Moh's scale

7. natural forming, inorganic, crystalline structure

8. rocks undergo weathering they become

10. color left mineral rubbed on tile

12. Farmers leave stalks

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