你即將離開本站

並前往https://www.maine.gov/dacf/mgs/education/lessons/act33.pdf

Activity 33: Soil Horizons Maine Geological Survey

The purpose of this laboratory exercise is to examine soil horizons in the classroom and to have students realize the nature of the components in each horizon.

確定！ 回上一頁

查詢 「Soil horizons」的人也找了：

  1. Soil horizons
    2.
  2. E horizon
    3.
  3. Gleying in soil
    4.
  4. Soil texture
    5.
  5. Subsoil
    6.
  6. Humus
    7.
  7. Top soil
    8.
  8. Soil formation
    9.