Ribosome packages nutrients and sends itto different parts of the cell
They have a negative charge.
The fossils that provide information on the formation of an oxygen-rich atmosphere are the stromatilites from the Precambrian era. These are layered and columnar fossils consisting mainly of cyanobacteria which were the original life form back then. These bacteria took in carbon dioxide and produced oxygen by photosynthesis as early as 2.5 billion years ago (the earth is about 4.5 billion yrs old).
Need the descriptions in order to answer the question.
The main 3 parts are the magma , the central vent and a crater
