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Online MCQ Assignment
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1. At what concentration (in ppm), is nitrogen present in the atmosphere? a) 780,840 b) 390,420 c) 78,084 d) 900,000 2. In the lower layers of atmosphere, what range of wavelengths of light is predominant? a) Less than 100 nm b) Greater than 300 nm c) Between 100-300 nm d) All wavelengths are equally present…

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