Water is definitely the Earth's main purely natural eroding drive. A similar seemingly harmless liquid we consume, has the ability to sculpt the land all around us. Organic Weathering − This is a sort of weathering that happens as a consequence of microorganisms. Lichen, the symbiosis of fungi and algae, https://www.generationgenius.com/videolessons/weathering-and-erosion-video-for-kids/