General Knowledge Ecology and Environment Environmental pollution

खालीलपैकी कोणते सल्फर डायऑक्साइड (SO2) प्रदूषणाचे सर्वोत्तम सूचक आहे?

1
टेरिडोफाइट
2
शैवाक
3
ब्रायोफाइट
4
शैवाल

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