In this topic, you will learn about different methods that societies use to try to protect soil, since it is such a precious resource. Take a look at the picture to the right. It depicts one of these techniques. What do you think this technique is called? How do you think it prevents soil depletion? Where do you think this technique is primarily used? Why? Post your responses to the discussions area. Then, return to the topic several times over the next few days to read your coursemates’ posts. Reply to at least two of them, being sure to offer new insights, ask questions, and encourage further conversation.