Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 General Knowledge Indian Geography Soils

मृदा संरक्षण ________ से मिट्टी की रोकथाम है।

1
क्षरण
2
अम्लीकरण
3
लवणता
4
उपरोक्त सभी
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