Q: What is humus?
   Q: Which type of soil can hold more water, clayey soil or sandy soil?
   Q: What is loamy soil?
   Q: Why do most plants not grow well in clayey soil?
   Q: Which soil type is suitable for rice cultivation?
   Q: What is the importance of minerals in soil?
   Q: How does weathering contribute to soil formation?
   Q: What are some uses of soil?
