Final answer:
Isostasy can cause land lifting when groundwater dissolves limestone, leading to the formation of caves and stalactites and stalagmites.
Step-by-step explanation:
Isostasy is a geological concept that refers to the balance between the weight of Earth's crust and the underlying mantle. It can cause land lifting when groundwater dissolves limestone.
When groundwater, containing atmospheric CO2, finds its way into microscopic cracks in limestone, the CaCO3 dissolves in the acidic solution. This gradual process can enlarge the cracks and eventually lead to the formation of caves.
As groundwater seeps into the caves, water evaporates from the solution, causing the equilibrium to shift and depositing a circular layer of solid CaCO3 that grows down from the ceiling as stalactites. Stalagmites also form below where the droplets land. So, the dissolution of limestone due to groundwater can contribute to land lifting.