1. Name some organisms that live in the soil?
2. Guess: How many tons of organic matter can an earthworm digest in one year?
3. What is organic matter?
4. How many years does it take to form one inch of topsoil?
5. What is the most productive soil layer?
6. What are the two causes of soil erosion?
7. Each distinctive layer in soil is called what
8. True or False: Soil texture is the percentage of sand, silt, and clay.
9. True or False: No-till is a farming practice that leaves the soil
undisturbed prior to planting.
10. What is soil called that is deposited by wind or water?
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