Teaching UPTET 2023 (Paper 1 & 2) Mock Test People Development & Environment Environmental Issues Pollution

धूरके(स्मॉग)  म्हणजे काय?

1
ओझोन आणि धूर
2
वाहन प्रदूषक
3
धुके आणि धूर
4
धुके आणि ओझोन
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