| Question | Answer |
|---|---|
| To break down or wear away. Time and weather breaks down materials. | Decay |
| To break down an organism into nutrients | Decompose |
| An amount of rock or soil layer down in an area | Deposit |
| The natural process where rock and soil are moved from one place to another | Erosion |
| The scientific study of Earth | Geology |
| Dark rich soil formed from decayed plants and animals | Humus |
| Small living plants or animals that can only be seen with a microscope | Microrganism |
| The amount of of water in an object | Moisture |
| A principle stating that younger rocks are above the older rocks | Superposition |
| Breaking down rocks and other materials on Earth's surface. This forms sediment in the soil | Weathering |
