2240 - HOW SOILS ARE FORMED COLLECTION - 15 SPEC.

Included in this collection are rocks and minerals that breakdown to become the major components for soils. Samples of actual soils demonstrating texture and composition as end products are included. The 15 specimens are 1 -1/2” X 1-1/2" and are number coded in a compartmented container. Soils packaged in plastic bags. Grades 5-12.  Geology is a required STEM subject.