Plants are the producers, synthesizing their own food through the process of photosynthesis. They thrive on soil. Humans and animals derive their nutrition either directly or indirectly from plants growing on soil. Living entities are dependant on soil as it supplies them with nutrition. Several microbes are found living in soil and derive their nutrients from soil. Entities living in water are dependant on soil as some of these depend on the aquatic plants that thrive in the soil underneath.