Teaching Punjab Pre Primary Teacher Test Series 2020 General Knowledge Ecology and Environment Environment Problems

ओझोन कमी होण्यास जबाबदार असलेले मुख्य वायू:

1
कार्बन डाय ऑक्साइड
2
नायट्रोजन डायऑक्साइड
3
मिथेन
4
क्लोरो फ्लुरो कार्बन
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