NCERT Class 7 Science Extra Questions Chapter Soil 1. What are the factors responsible for soil formation? ( List some processes of soil formation.) The soil is formed when rocks crumble due to weathering and natural erosion. The conditions under which soil weathers determine its properties. The following are some of the most important procedures: Physical Weathering : Physical factors such as the sun, wind, and ice cause changes in temperature or pressure, or both, which increase or decrease the volume of rocks, causing them to crumble. When various chemical components, such as rainfall, react with the minerals in the rocks, new minerals or salts are formed. Biological weathering occurs when living organisms, such as plants, animals, and bacteria, secrete or release acids that corrode the rocks. The foundation aims to support holistic community initiatives in India to address some of the country's most pressing social issues, including health and nutrition, water and sanitation
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