'Early earth atmosphere' presentation slideshows

Icons of Evolution

854 views • 77 slides

Review and Quiz

Review and Quiz. Unit 4 Evolution. 1. What are the 4 requirements for Natural selection?

684 views • 48 slides

Chapter 4 From Molecules to Cells and the Origin of Selection

588 views • 41 slides

Sanjoy Som, David Catling , Jelte Harnmeijer , Peter Polivka , Roger Buick

Air density limited 2.7 billion years ago limited to twice present levels by fossilized raindrop imprints. Sanjoy Som, David Catling , Jelte Harnmeijer , Peter Polivka , Roger Buick Earth and Space Sciences and Astrobiology Program University of Washington.

426 views • 23 slides

Economic Uses of Minerals & Rocks

Economic Uses of Minerals & Rocks. Energy Resources, Ores, Gems, and Building Materials. Our Earth Resources. Why you must have someone somewhere who develops the resources you use every day: . Our Earth Resources. Resource =

2.49k views • 14 slides