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Qবায়ুমণ্ডলে ওজোন গ্যাসের পরিমাণ কত?
ID: #17771
পরিবেশ বিজ্ঞান
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#17771Q ID
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পরিবেশ বিজ্ঞানTopic
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Correct Answer: Option B
Explanation
Answer: B) 0.00006%
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