Which of the Following Represents an "Ecosystem Service" Performed by Soil

Multiple Choice

Which of the following represents an "ecosystem service" performed by soil organisms?

A) maintaining soil fertility by decaying and cycling organic material
B) providing minerals by assisting in weathering
C) altering topography by amplifying erosion
D) preserving toxic materials by situating toxins into encapsulated structures
E) contributing to desertification by removing excess moisture from the soil