Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Knowledge Geography (World Geography) Biogeography
The process of covering the bare ground between plants with a layer of organic matter, to retain soil moisture is known as _______.
1
fertilising
2
composting
3
mulching
4
More than one of the above
5
None of the above