video1.0<iframe src="https://www.loom.com/embed/1079b538e59040e19509ab34c6b11efe" frameborder="0" width="960" height="720" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>720960Loomhttps://www.loom.com720960https://cdn.loom.com/sessions/thumbnails/1079b538e59040e19509ab34c6b11efe-00001.jpg178a: NO CHANGE; the 14CO2 exposure was initiated by the researchers.; the researchers exposed the samples to the 14CO2.; it was time for the researchers to expose the samples to the 14CO2.;