10 Most Important Events
Early bacteria
Early bacteria formed during the Precambrian; during this time the oceans formed and covered most of the earth 4 billion years ago.
Dinosaurs
The first dinosaurs appear during the Triassic period.
Works Cited
http://www.treehugger.com/clean-technology/heat-seeking-bacteria-could-hold-key-to-better-cellulosic-ethanol.html
http://sciencewithme.com/learn-about-photosynthesis/
http://en.wikipedia.org/wiki/Coral_reef
http://pixgood.com/scientific-drawings-of-insects.html
http://www.broadsheet.ie/2013/05/27/today-in-pangaea/
http://www.chronozoom.com/deniax/Deniax/7a6d5326-be18-4871-a603-c736bcec2d64
http://www.livescience.com/12937-10-mysteries-humans-evolution.html