Question

The Earth’s atmosphere contains about 0.04% (or 400 parts per million) carbon dioxide. Although most of the carbon dioxide is in the form 12CO2, which is not radioactive, a specific fraction of the total is made up of radioactive 14CO2.
A) True
B) False

Answer 1

Answer:

True

Explanation:

Yes the given statement is true

Most of the carbon dioxide preset in the atmosphere is C12 isotope and a very small fraction of The atmosphere is made up by C14 isotope which is radioactive in nature

C14 makes about 1 to 1.5 atoms per $10^{12}$ atoms of carbon in the atmosphere.