The management of soil is an important consideration, particularly in urban areas and on rural properties where the risk of significant off-site impacts must be managed. Soil is made up of air, water, minerals and organic material and is one of the most important natural resources on earth. Most life on earth depends on soil as a direct or indirect source of food. Plants and animals source their nutrients from the soil and it is home to many different forms of life. Soil comes in a variety of forms and takes many years to develop, however it can be destroyed very easily.