During the Paleoproterozoic era, approximately 2.4 billion years ago, Earth's atmosphere underwent a dramatic shift known as the Great Oxidation Event. This rise in atmospheric oxygen was driven by the proliferation of ancient marine cyanobacteria.
State the name of the metabolic process used by these organisms to convert dissolved carbon dioxide and water into glucose and oxygen.
97 exam-style questions on Edexcel GCSE Chemistry 9.2 Earth and atmospheric science, covering 9.2.1 The Earth's early atmosphere, 9.2.2 How the atmosphere evolved, 9.2.3 Chemical test for oxygen, and 9.2.4 The greenhouse effect and climate change. Each one has a worked solution and a mark scheme showing where the marks go.