What effect causes the seasonal variation in color and shading of parts of the Martian surface?
A)changes in dust covering in response to wind storms
B)changes in the fluorescent glow caused by the varying intensity of solar UV radiation
C)growth and decay of vegetation
D)moisture falling as light rain, dampening the surface

Question

Quizplus · Accepted Answer

The seasonal variation in color and shading of parts of the Martian surface is caused by changes in dust covering in response to wind storms. As dust is blown around by the wind, it can settle on different parts of the surface, changing their color and shading. This is particularly evident in the polar regions, where seasonal ice caps are formed by dust and frozen carbon dioxide.

What Effect Causes the Seasonal Variation in Color and Shading