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Bacteria Earth's oldest life forms (PROKARYOTES) Earth's oldest life forms (PROKARYOTES) – between 3.5 and 3.8 billion years old Most abundant life form. - ppt download
![A)Bacteria are the oldest forms of life. They were the only life forms until about 2.1 billion years ago. Other life forms evolved from bacteria. Bacteria grow, reproduce, and carry out respiration.(B) A)Bacteria are the oldest forms of life. They were the only life forms until about 2.1 billion years ago. Other life forms evolved from bacteria. Bacteria grow, reproduce, and carry out respiration.(B)](https://haygot.s3.amazonaws.com/questions/287103.jpg)
A)Bacteria are the oldest forms of life. They were the only life forms until about 2.1 billion years ago. Other life forms evolved from bacteria. Bacteria grow, reproduce, and carry out respiration.(B)
![Fossil microbes discovered in Australia could be Earth's oldest known life form | Microbiology | The Guardian Fossil microbes discovered in Australia could be Earth's oldest known life form | Microbiology | The Guardian](https://i.guim.co.uk/img/static/sys-images/Guardian/Pix/pictures/2011/8/21/1313943357847/Fossil-microbes-from-Stre-007.jpg?width=465&quality=85&dpr=1&s=none)
Fossil microbes discovered in Australia could be Earth's oldest known life form | Microbiology | The Guardian
![Stromatolites, the oldest life form that still exists today, Shark Bay, Australia Stock Photo - Alamy Stromatolites, the oldest life form that still exists today, Shark Bay, Australia Stock Photo - Alamy](https://c8.alamy.com/comp/H7P2YM/stromatolites-the-oldest-life-form-that-still-exists-today-shark-bay-H7P2YM.jpg)