pyq/2012/prelims/98

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?

(A) 1 and 2 only

(B) 3 only

(C) 1, 2 and 3

(D) None of them