video1.0<iframe src="https://www.loom.com/embed/b0e2f7975936480db0653a4e47449528" frameborder="0" width="1038" height="778" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>7781038Loomhttps://www.loom.com7781038https://cdn.loom.com/sessions/thumbnails/b0e2f7975936480db0653a4e47449528-00001.jpg249p: Over the course of the passage, the focus shifts from a: a criticism of a scientific model to a new theory. ; a description of a recorded event to its likely cause. ; the use of ice core samples to a new method of measuring sulfates. ; the use of radiocarbon dating to an examination of volcanic glass. ;