Soils

1. medium sized particles in soil
4. layer of rock underneath soil
5. _____ depend on soil to provide food.
6. Making sure a sample is _____ will help the soil particles pass through a sieve.
7. ______ eat plants.
10. soil layer containing roots and plant/animal material
12. ______ material is the layer of soil with rock fragments
13. Good _____ is essential for growing plants.
15. Too much clay can make a soil really ______.
16. a layer of soil is called a soil _____.
18. Taking a _____ of soil can help us understand what type of soil is underground.

1. soil layer with less less plant and animal material but contains minerals
2. organisms that help to break down decaying material in soil
3. Bacteria and ______ break down plants/animals in soil, helping them decay.
5. A scientifc statement that says IF you do something in an experiment THEN you predict what will happen.
8. the largest particle of soil that feels rough and gritty
9. very small soil particles that can hold nutrients and does not allow water to pass throuh
11. Digging a soil _____ is a good way to see layers of soil.
14. Dead and living organisms are _____ matter in soil.
16. soil layer of rotting organic material
17. When rocks break down into smaller pieces because of ice, wind or water, they are _____.