![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 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](https://slideplayer.com/7947405/25/images/slide_1.jpg)
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
![View of stromatolites formations, the oldest life form which at glimpse resembling pieces of rocks at Hamelin Pool in Shark Bay, Western Australia Stock Photo - Alamy View of stromatolites formations, the oldest life form which at glimpse resembling pieces of rocks at Hamelin Pool in Shark Bay, Western Australia Stock Photo - Alamy](https://c8.alamy.com/comp/2PNF9K7/view-of-stromatolites-formations-the-oldest-life-form-which-at-glimpse-resembling-pieces-of-rocks-at-hamelin-pool-in-shark-bay-western-australia-2PNF9K7.jpg)
View of stromatolites formations, the oldest life form which at glimpse resembling pieces of rocks at Hamelin Pool in Shark Bay, Western Australia Stock Photo - Alamy
![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&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)
Stromatolites, the oldest life form that still exists today, Shark Bay, Australia Stock Photo - Alamy
![World's Oldest Fossils Show Sulfur-Based Microbes Lived 3.4 Billion Years Ago, Presenting a New Target for Astrobiology World's Oldest Fossils Show Sulfur-Based Microbes Lived 3.4 Billion Years Ago, Presenting a New Target for Astrobiology](https://www.popsci.com/uploads/2019/03/18/KCZHH4QWO2H4UIOZHMSWND353A.jpg?auto=webp)
World's Oldest Fossils Show Sulfur-Based Microbes Lived 3.4 Billion Years Ago, Presenting a New Target for Astrobiology
![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)