Feb 24, 2018 · 2013 September-October, Katie L. Burke, “In the News”, in American Scientist: Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis: the ability to convert water and carbon dioxide into carbohydrates and waste oxygen using solar energy.

data structure alignment; data-structured-coupling; data-structured-couplings; data-structures; data switch; data-synchronization; data system; data-table; data-tables