For assignment 3, you will write up 2 events of your choice

Each description must be exactly 5 clearly written, concise sentences explaining the event. Each description should include an explanation of what happened, where it happened and when exactly it occurred. Please also include other details; what caused the event (e.g. mass extinction caused by a climate changing event), what effect did the event have on other parts of the Earth system (e.g. formation of Pangea had an effect on the overall climate.), and/or what evidence did scientists use to recognize that this event occurred (e.g. presence of iridium is evidence for a meteorite impact).

Based on the due date of November 7, you may choose your two events from any of these time periods (Archean, Proterozoic, Early Paleozoic, Middle Paleozoic, or Late Paleozoic)