Deforestation a. decreases carbon dioxide in the atmosphere b. prevents erosion c. causes population explosions d. has the greatest impacts in tropical areas and arid regions e. is not widespread in north america

The answer to your question is 
d. has the greatest impacts in tropical areas and arid regions

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Answerspring and autumn

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