Soil remediation using bio techniques refers to the process of improving the health and fertility of soil through the use of living organisms, such as microorganisms and plants. This can include practices such as adding compost or other organic matter to the soil, using cover crops to improve soil structure and fertility, and using beneficial microorganisms to increase nutrient availability and suppress pests and diseases. Other soil restoration techniques may include using biochar, which is a form of charcoal created by burning biomass, and using mycorrhizal fungi, which are beneficial fungi that form symbiotic relationships with plants and can improve soil health. The goal of these techniques is to improve the overall health and productivity of the soil, which can lead to increased crop yields and improved ecosystem services.