Answer:
Option (1), (3) and (5)
Explanation:
The groundwater refers to the flow of water under the surface of the earth. These are fresh water, as most of the water filtrates as it percolates down through the pore spaces in the rocks. These groundwater are then added to the seas and oceans.
The groundwater when mixes with carbon, it forms the Carbonic acid, which is weaker in nature. This acid can break down the water molecules. These water, carrying various ions in it, when flows over some rocks, it dissolves and erodes some particles from it. The carbonate rocks such as limestone are often dissolved by the groundwater due the chemical weathering process, resulting in the formation of caves.
The groundwater also plays an important role in the water cycle process, forming the caves by undergoing chemical weathering process.
Hence, the correct answer are option (1), (3) and (5).
