Teachers.io Lesson Details Thursday March 12th Geologic Time Scale Activity 2019-2020 Biology Date March 12, 2020 Additional Info https://www.youtube.com/watch?v=tkxWmh-tFGshttps://www.youtube.com/watch?v=8qnnoePeHlkhttps://www.youtube.com/watch?v=H2_6cqa2cP4 Attachments History of Life vocab key.docx March 12, 2020, 3:29 p.m. - 26.3 KB