Which planet is 5.5 percent of earth's mass and has no moon?

Mercury has 0.0553 earth's mass and has no natural satellite. It is the planet closest to the sun and also the smallest, its surface is rocky and solid like the earth, has a diameter of 4879 km and is formed mainly of metal elements. Its orbit around the sun is 88 days and its temperatures are extremely high due to its proximity to the sun.

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There is a great difference between the windward and leeward side of a mountain. windward and leeward sides are opposites.

Aeolian processes,  pertain to  wind  activity in the study of  geology  and  weather  and specifically to the wind's ability to shape the surface of the  earth  (or other  planets). winds may  erode, transport, and deposit materials and are effective agents in regions with sparse  vegetation, a lack of soil moisture and a large supply of unconsolidated  sediments. although water is a much more powerful eroding force than wind, aeolian processes are important in arid environments such as  deserts