1. Structure of the Earth: The early geosphere, atmosphere and hydrosphere, 2. Rocks, Minerals and the Rock Cycle, BONUS: Reliability vs validity vs accuracy...
The proportions of different gases in the atmosphere 4.9.1.1, The earths early atmosphere 4.9.1.2, How has oxygen increased and carbon dioxide decreased 4.9.1.3-4...
Chapter 1: Early Foundations of the Ocean Sciences, Chapter 7: Introduction to Life in the Sea, Chapter 4: Water- It's chemical and Physical Properties...
5.9.1 The Composition and Evolution of the Earth’s Atmosphere, 5.9.1.1 The Proportions of Different Gases in the Atmosphere, 5.9.1.2 The Earth’s Early Atmosphere...