Anaerobe to Aerobe - How Oxygen Changed Life on Earth Forever

Explore the revolutionary impact of oxygen on Earth's early life in this 25-minute video. Discover how non-oxygen-loving organisms metabolized before the advent of oxygen respiration, and learn about the compounds they utilized. Examine the dual effects of molecular oxygen buildup, both toxic and beneficial to early life forms. Investigate the shifts in carbon, sulfur, and nitrogen cycles, leading to the evolution of new metabolisms and organisms. Understand how oxygen respiration enabled the development of larger, more complex life forms, and delve into the great oxidation event (GOE) that caused one of the greatest mass extinctions in Earth's history. Learn about a second mass extinction triggered by nutrient overconsumption and how life eventually recovered, paving the way for the evolution of large eukaryotic animals. Gain insights into the formation of the ozone layer, the role of sulfide producers in maintaining anoxic oceans, and the ultimate importance of oxygen in allowing eukaryote evolution.

First Organisms on Earth
Change in S & C cycles
Change in N cycle
Higher Energy Yield of O2 Respiration
New Aerobic Metabolisms
Metabolic Redox Cycle
Imbalanced Cycle Caused GOE
Oxygen Caused Mass Extinction
A 2nd Mass Extinction Feast to Famine
Ozone Layer Protected Land Life
Sulfide Producers Kept Oceans Anoxic
Oxygen Allowed Eukaryote Evolution
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