Manure is a natural substance made from the decomposition of plant and animal waste. In Class 9 Science, it is described as an organic fertilizer that improves soil fertility and texture. Manure adds nutrients like nitrogen, phosphorus, and potassium to the soil and increases its water-holding capacity. It is eco-friendly, though not as rich in nutrients as chemical fertilizers. Using manure is a key method in sustainable agriculture and is covered under Improvement in Food Resources.