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Rocket clouds
Soil by Mind Map: Soil

1. soil layers

1.1. topsoil

1.2. subsoil

1.3. parent material

1.3.1. bedrock

1.4. bedrock

2. soil types

2.1. sandy soil

2.2. rich soil

2.3. colored soil

3. the dust bowl

3.1. Oklahoma

3.1.1. texas

3.2. texas

3.3. new mexico

3.4. 1930

4. organic matter

4.1. made up of dead animals

5. Soil needs

5.1. N-Nitrogen

5.2. P-Phosphorus

5.3. K-Potassium

5.4. Water

6. sand, clay, silt

7. weathered rocks