Final answer:
A sinkhole is evidence of the process of chemical weathering in the landscape.
Step-by-step explanation:
A sinkhole is evidence of the natural process of chemical weathering in the landscape. Sinkholes are formed when acidic groundwaters react with basic rock formations, such as limestone. This chemical reaction causes the rocks to dissolve, resulting in the formation of a sinkhole.
Sinkholes are frequently an indicator that the water reservoir is running low, particularly ones like the one that happened in Mexico City. The water beneath the surface usually helps to stabilise it, but if there is an unexpected opening or a cave, it may collapse in on itself and create a sink hole. Additionally, drilling and fracking may cause this.