Q: 57 (IES/2014)


Which of the following are sources of methane, a greenhouse gas ?
1. Domestic animals
2. Coal mining
3. Wetlands
Select the correct answer using the code given below :
question_subject: 
Ecology
question_year: 
2014
question_exam: 
IES
stats: 
0,3992,680,160,48,472,3992