What is soil? What are its features? What is soil made of? Name the main property of the soil.

1. What is soil? What are its features? 2. What is soil made of? 3. Name the main property of the soil. 4. How is humus formed? 5. How does a person use the soil?

1. Soil – the top layer of the earth’s surface.
2. The soil consists of sand, clay, water, mineral salts, humus, and air.
3. The main property of the soil is fertility, which is determined by the presence of humus in the soil.
4. Humus is formed from the rotten remains of living organisms.
5. The soil is the basis for the development of agriculture.