A large part of global greenhouse gas emissions are attributed to the methane gas production in farming and livestock management. Which among the following practices in agriculture lead to methane emission?
1. Composting of organic waste
2. Open burning of crop residues on fields
3. Addition of Urea and Lime in soil
4. Rice / Paddy cultivation
Select the correct option from the codes given below:
This question is a part of GKToday's Integrated IAS General Studies Module