Soil science : The scientific study of soil as a natural resource, including its formation, classification, and mapping; the physical, chemical, and biological properties of soils; and how these properties relate to the use and management of soils for agricultural purposes.
👇 ស្វែងរកឯកសាររៀននិងការងារគ្រប់ប្រភេទនៅទីនេះ៖
👇 ស្វែងរកពាក្យផ្សេងទៀតនៅប្រអប់នេះ៖