CBSE Class 7 Science Soil And Its Profile
- what is soil erosion
- natural resources
- Why is Humus Important?
- Write about the all horizons of soil profile
- but my teacher tell me only 4 layers of soil
- Why weathering of rocks is important in the formation of soil
- Who goes the study of soil
- What is liching ? What is percolation? What are the layers of soil?
- how does expansion and contraction work for the formation of soil?
- Why is the top layer of soil most fertile?
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