Civil Services Punjab State Civil Services CCE 2025 General Knowledge Ecology and Environment Environmental pollution
Mercury is a toxic substance that severely contaminates land, water, air and the food chain. Which among the following is/are the source(s) of mercury pollution?
I. Pesticides
II. Dental amalgam fillings
III. Fluorescent lamp
IV. Coal-based thermal power plants
1
Only I
2
Only I and II
3
Only I, II and III
4
I, II, III, and IV