Q: 23 (IAS/2012)

Consider the following agricultural practices :
1. Contour bunding
2. Relay cropping
3. Zero tillage In the context of global climate change, which of the above helps/help in carbon sequestration/storage in the soil ?
question_subject: 
Geography
question_year: 
2012
question_exam: 
IAS
question_sub_subject: 
Geography of India
question_topic: 
Agriculture
stats: 
0,3080,4400,976,3016,2352,1136