Question

which is the process that is the more effective agent of erosion?
wind erosion
heating and cooling
salt crystal growth
water erosion

Explanation:

Water erosion is a highly effective agent of erosion. Water in the form of rivers, streams, rain - runoff, and ocean waves can carry large amounts of sediment and wear away rock and soil over time. Wind erosion is significant in arid regions but less effective overall compared to water in most environments. Heating and cooling cause weathering rather than direct erosion in the same sense as water. Salt - crystal growth is a form of physical weathering, not the most effective erosion agent.

Answer:

Water erosion