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soil
| Question | Answer |
|---|---|
| Soil | is 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 | is the solid layer of rock beneath the soil. |
| Humus | is a dark colored substance that forms when plants and animals decay. |
| Geologist look a 3 things to identify the type of soil | Soil Fertility: How well the soil supports plant growth B. Soil Texture: The feel and size of the particles in the soil C, 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 |
| . How is humus formed: | Decomposers: breaks up remains of dead plants and animals. Burrowers: Mix up the soil |