Answer:
C) Erosion
D) Iron, Magnesium and Sodium Ions
E) Mountains (If I am wrong please comment.)
Explanation:
C) In the long run, cutting of trees on slopes leads to a gradual decrease in mass stability as a result of the decay of roots which previously acted as tensile reinforcements in the slope. Root decay can also lead to the formation of pipes in a slopes which promote internal or seepage erosion.
D) NASA's Mars Atmosphere and Volatile Evolution (MAVEN) orbiter has spotted iron, magnesium and sodium ions
E) Mountains
