Radiocarbon is produced in the atmosphere as a result of

Please identify a business person (profit or non-profit) who you admire and articulate:
October 20, 2020
Middle East and its people
October 20, 2020

Radiocarbon is produced in the atmosphere as a result of

Radiocarbon is produced in the atmosphere as a result of
1. collision between fast neutrons and nitrogen nuclei present in the atmosphere.

2. action of ultraviolet light from the sun on atmospheric oxygen
3. action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
4.