Which of the following is not a factor in weathering?

• A. Temperature changes
• B. Tree roots
• C. Construction activities
• D. Wind erosion

Answer: (C)

The correct answer is based on an understanding of the processes that contribute to weathering. Weathering refers to the breaking down of rocks and minerals through various natural processes, and while temperature changes, tree roots, and wind erosion are all involved in this process, construction activities do not inherently contribute to the natural weathering of geological materials.

Temperature changes can cause expansion and contraction of materials, leading to physical weathering. Tree roots may grow into cracks in rocks, exerting pressure and causing further breakdown of the rock structure, which is an example of biological weathering. Wind erosion contributes by physically removing particles from rock surfaces, which is a form of mechanical weathering.

On the other hand, construction activities may disturb the ground and contribute to erosion but are primarily human-induced and not a natural weathering process. Therefore, it is this lack of direct relation to the natural weathering process that makes construction activities the correct choice for the factor that is not involved in weathering.