Factoons. Brainwave. 9th May.

I have started doing a Science cartoon every Wednesday for the Brainwave facebook page. This one is about Carbon Dating. You can visit the facebook page here - Brainwave
Here's the description for this Factoon - Any living being gathers a fixed ratio of Carbon12 and Carbon14 during its lifetime. Once dead, it begins to lose the Carbon14 stored within its body while the Carbon12 amount stays the same. The difference in the ratio of Carbon12 and depleted Carbon14 helps scientists measure the fossil's age.