... to the plate tectonics seen on Earth, however, most of the planet’s tectonic activity – the phenomenon – that usually causes erosion – are concentrated over stationary “hot spots” where molten rocks wells up. Its proximity to the sun also contributed to its lack of water, which accounts to the majority of erosions that occurs on Earth. (Corfield, p. 75)
Corfield, R.M. Lives of the planets: a natural history of the solar system. Westview Press, 2007.
McKinney, Michael, Schoch, Robert, and Yonavjak, Logan. Environmental science: systems and solutions. Jones & Bartlett Publishers, 2007.
Zimmerling, Carl. Astronomy for the Layman: Reality Before Belief. Everpower Company, 1995.... explain why...