The Critical Zone

Summary and Final Tasks


The Critical Zone is a complex system formed at the intersection of the lithosphere, biosphere, hydrosphere and atmosphere, and including soils. In this lesson, you've learned about system modeling and considered human impacts on the Critical Zone and soil and adaptive measures that society can take to sustain the Critical Zone and soil. You also attempted to qualitatively model the Critical Zone by considering the various processes within each component of the CZ and how they are linked to the other components.

Reminder—Complete all of the lesson tasks!

You have finished Lesson 12. Double-check the list of requirements on the Lesson 12 Overview page to make sure you have completed all of the activities listed there before beginning the next lesson.

Tell us about it!

If you have anything you'd like to comment on or add to, the lesson materials, feel free to share your thoughts with Tim. For example, what did you have the most trouble with in this lesson? Was there anything useful here that you'd like to try in your own classroom?