Geography · Soil Science
मृदा विज्ञान (soil science) के क्षेत्र में, ह्यूमस (humus) को क्या माना जाता है?
- 1एक बिना विघटित क्रिस्टलीय पदार्थ
- 2एक खनिज समृद्ध अकार्बनिक यौगिक
- 3मृदा में सड़ने वाला कार्बनिक पदार्थ✓
- 4एक कृत्रिम योज्य (synthetic additive)
सही उत्तर देखें
मृदा में सड़ने वाला कार्बनिक पदार्थ
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