In recent times, it has been postulated that Indian deltas including Ganga-Brahmaputra, Krishna-Godavari, Brahmani and Mahanadi are facing threat of submergence. Which among the following can pose threats to deltas?
1. Large dams
2. Groundwater mining
3. Artificial levees that affect river courses
Select the correct option from the codes given below:

Answer: [D] 1, 2 & 3

This question is a part of GKToday's Integrated IAS General Studies Module