The Layers of the Earth's Atmosphere
In this Earth's atmosphere worksheet, students will complete a graphic organizer by filling in the 4 layers of the atmosphere starting with the troposphere.
7th - 12th Science 25 Views 76 Downloads
Ozone Layer and Eukaryotes Show Up in the Proterozoic Eon
During the Achaea Eon, Cyano bacteria start to produce and release oxygen into the atmosphere making the environment suitable for Eukaryotic life forms. Sal explains the timeline of these events as well as the consequences that occurred...
10 mins 10th - 12th Science