Across
- 2. Compost is a mix of soil and ______ parts of plants.
- 5. The rotting tree in the photo on page 37 will become part of the ______.
- 6. Mushrooms get ___ to live as they break things down.
- 7. Over time rocks and soil break down into smaller _____________.
- 8. You can see things decompose in the soil by making this type of pile.
- 10. This layer of soil is beneath the topsoil.
Down
- 1. What do we call soil that is rich with nutrients?
- 3. What can plants not grow without?
- 4. ______ and other small living things help break down the dead plants in soil.
- 9. This is the top layer of soil and is best for growing plants.