Mercury is a very toxic and dangerous substance that has severely contaminated land, water, air and the food chain throughout India. Which among the following is / are sources of mercury pollution?
1. Pesticides
2. Dental amalgam fillings
3. Fluorescent lamps
4. Coal based thermal power plants
Choose the correct option from the codes given below:

Answer: [D] 1, 2, 3 & 4

Emissions from the hundreds of thermal power plants release heavy amounts of mercury ‑ a heavy metal that affects the nervous system in humans. Fluorescent lamps contain mercury and their disposal in the municipal solid waste poses the danger of contaminating the water bodies.

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