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soil
| Term | Definition |
|---|---|
| Soil :loose weathered material on earth's surface in which plants can grow. It is a mixture of rock particles, minerals, decayed organic matter, water, and air. | |
| Bedrock :the solid layer of rock beneath the soil. | |
| Humus: a dark colored substance that forms when plants and animals decay. | |
| Geologist look at: 3 things to identify the type of soil | |
| Soil Fertility: How well the soil supports plant growth | |
| soil Fertility: How well the soil supports plant growth | |
| Soil Texture: The feel and size of the particles in the soil | |
| Soil pH: How much acid is in the soil | |
| O Horizon: Made of organic material of plant and animal remains | |
| A Horizon: Made of topsoil | |
| B Horizon: Made of subsoil | |
| C Horizon: Made of bedrock that is beginning to weather and break apart | |
| Bedrock: Solid layer of rock | |
| Decomposers: breaks up remains of dead plants and animals. | |
| Burrowers: Mix up the soil |