Environment & Ecology · EVS
हमें पके हुए भोजन को लंबे समय तक खुला या बिना प्रशीतित (unrefrigerated) नहीं छोड़ना चाहिए। ऐसी परिस्थितियों में पके हुए भोजन के खराब होने के लिए कौन सा प्राथमिक कारक जिम्मेदार है?
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