Slide 1HISTORY OF LIFE ON EARTH Physical conditions - last 4 billion years major changes: oxygen in atmosphere climate change ocean currents sea level changes continent movement…

Slide 1Cell Communication Chapter 11 Cell Communication Slide 2 Overview: Cellular Messaging  Cell-to-cell communication is essential for both multicellular and unicellular…

Slide 1 The History of Life on Earth As We Know It Slide 2 The History of Earth Earth is ~ 4.5 billion years old Earth’s history is divided into four eons –Hadean Eon:…

Slide 1 The Living Earth Slide 2 Slide 3 Industrial chemicals released into the atmosphere have damaged the ozone layer in the stratosphere Slide 4 The Earth’s atmosphere…

Slide 1 Geologic Time Tutoring Session: Lesson 3 Slide 2 Lesson 3 Origin and Evolution of Life Slide 3 Slide 4 Scientists learn about Earth’s geological (the Earth itself)…

Slide 1 Slide 2 La nuova biologia.blu Le cellule e i viventi David Sadava, David M. Hillis, H. Craig Heller, May R. Berenbaum Slide 3 Evolution of Life Slide 4 What Is the…