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.
Practise Edexcel GCSE Chemistry Earth and atmospheric science with exam-style questions for Foundation and Higher tier. 62 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
