Suppose that you have just started a summer internship working for a cooperative service, where you will collect soil samples, conduct laboratory and field tests, and make recommendations on soil conservation and agricultural practices.

(i) Identify one biome that is characterized by soil that is rich in humus. Describe how humus originated in the soil of this biome and TWO ways that humus improves conditions for plant growth.
(ii) Describe TWO soil conservation practices that are designed to decrease soil erosion. *