<human>:  I have a question about the book The Rise of Microorganisms. Where does the author say that the first life on Earth was formed?
<bot>: The first life on Earth was formed in the oceans. The first life on Earth was probably a single-celled organism called a prokaryote. Prokaryotes are not true cells, but they are still alive. Prokaryotes are very simple organisms, and they are not very good at surviving in the environment.