如果地球上没有土壤,这个行星上就不会有多少生命。土襄联系着地球上的岩石和生命,支撑着给予动物和人类养分的植物。岩石风化变成较小颗粒便形成土壤,并释放出能供给植物生长所需的化学成分。土壤中含有水、空气和矿物质,并且富含有机物质,例如根、菌类、甲虫和蠕虫等,另外还有细菌和藻类等微生物。土壤中的空气和水对植 If there is no soil on earth, there is not much life on this planet. Tung Hsiang links rocks and lives on Earth, supporting plants that give nutrients to animals and humans. The weathering of rocks into smaller particles forms the soil and releases the chemical ingredients needed to feed the plants. Soil contains water, air and minerals, and is rich in organic matter, such as roots, fungi, beetles and worms, in addition to bacteria and algae and other microorganisms. The air and water in the soil are planted