Bone is used as a fertilizer because it contains the following plant nutrient :हड्डी खाद के रूप में प्रयुक्त की जाती है क्योंकि इसमें पौधों के लिये निम्नलिखित पोषक तत्व उपलब्ध है :
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Correct answer: D. Phosphorusफॉस्फोरस
Explanation
Bones are rich in calcium phosphate, so bone meal is a good source of phosphorus for plants.हड्डियों में कैल्सियम फॉस्फेट प्रचुर मात्रा में होता है, इसलिए हड्डी का चूर्ण पौधों के लिए फॉस्फोरस का अच्छा स्रोत है।More Environmental Studies (EVS) questions
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