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muthu k
's Polls
physics
Radiocarbon is produced in the atmosphere as a result of
collision between fast neutrons and nitrogen nuclei present in the atmosphere
1 vote (50%)
collision between fast neutrons and nitrogen nuclei present in the atmosphere
action of ultraviolet light from the sun on atmospheric oxygen
1 vote (50%)
action of ultraviolet light from the sun on atmospheric oxygen
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Wolmal
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