Question 19

(Multiple Choice)

The experiment in Fig. 8.3 demonstrates that the percentage of 18O2 increases when the:

The experiment in Fig. 8.3 demonstrates that the percentage of <sup>18</sup>O2increases when the:     A)water in the experiment contains <sup>18</sup>O2. B)carbon dioxide in the experiment contains <sup>18</sup>O2. C)water and carbon dioxide in the experiment both contain <sup>18</sup>O2.


A)water in the experiment contains 18O2.
B)carbon dioxide in the experiment contains 18O2.
C)water and carbon dioxide in the experiment both contain 18O2.

Answer