Activity – Where Is the Soil?

Discussion – How long does it take to lose or gain 1 inch of soil?

Think about what you know about historical or current instances of soil loss from agriculture. What was the time scale over which that occurred? What events lead to faster or slower loss?

Think about the five soil forming factors. In arid and semiarid climates of New Mexico and Colorado, what are the limitations to soil formation?

Activity – Where Is the Soil?

In the following images, draw lines to indicate what appears to be the boundary between soil and bedrock.