ESS1.C: The history of planet Earth

We see soil, walk on soil, and grow things in soil every day, but the vast majority of people never recognize how important soil is in sustaining life on Earth. This article presents background information linked to teaching resources to introduce K-12 students to many of the critical functions of soils. These materials were shared with teachers during a Geophysical Information for Teachers (GIFT) workshop at the annual meeting of the American Geophysical Union (AGU) in 2018.

his activity uses a qualitative nitrate test to observe results of some conversions and transformations in the nitrogen cycle.