Hans Suess's work (and subsequent studies carried out by other researchers) determined that the amount of ¹³C in Earth's atmosphere has _____, and the amount of ¹⁴C in the atmosphere has _____.

Question

Quizplus · Accepted Answer

Hans Suess's work showed that the amount of ^13C in Earth's atmosphere has decreased due to the burning of fossil fuels, which are depleted in ^13C. Similarly, the amount of ^14C has also decreased because fossil fuels contain no ^14C, leading to a dilution effect in the atmosphere.

Hans Suess's Work (And Subsequent Studies Carried Out by Other