How do organisms contribute to soil quality?

Organisms contribute to soil quality primarily by breaking down organic material, which is essential for creating nutrient-rich soil. This process, known as decomposition, involves various living organisms such as fungi, bacteria, earthworms, and other soil-dwelling creatures. As they consume organic matter—like dead plants and animals—they convert it into simpler compounds that are more accessible to plants. This conversion enriches the soil with nutrients such as nitrogen, phosphorus, and potassium, which are crucial for plant growth.

Moreover, the activity of these organisms helps to improve soil structure by aggregating soil particles, which enhances aeration and water retention. Healthy, diverse soil organisms also contribute to the overall biological activity in the soil, promoting a balanced ecosystem that can support plant life and increase productivity. Therefore, the role of living organisms in the breakdown of organic material is vital in maintaining and improving soil quality, making it the correct choice in this context.