Bacteria are thought to have first appeared on Earth around 3.5 billion years ago during the Archean era. This early period in Earth's history was characterized by the development of simple cellular life forms like bacteria.
In the Precambrian era, Earth was forming and evolving. It is characterized by the formation of the Earth, development of the atmosphere and oceans, emergence of simple organisms like bacteria and algae, and the formation of the first continents.
Life first flourished on Earth during the Precambrian era, which lasted from about 4.6 billion years ago to around 541 million years ago. This period saw the emergence of the first single-celled organisms like bacteria and algae, laying the foundation for the diversity of life that we see today.
Water first appeared on Earth during the Hadean Eon, which occurred around 4.6 to 4 billion years ago. This was before the Precambrian era, which began about 4 billion years ago.
No, the Mesozoic Era is not the first geological era. It is the era that followed the Paleozoic Era and preceded the Cenozoic Era in Earth's history. The Mesozoic Era is known for the age of the dinosaurs and lasted from about 252 million years ago to 66 million years ago.
Pre-Cambrian. It's when bacteria first came about.
Life first appeared on Earth during the Archean Eon, approximately 4 billion years ago. This era is characterized by the emergence of simple single-celled organisms like bacteria and archaea.
a bacteria
Bacteria are thought to have first appeared on Earth around 3.5 billion years ago during the Archean era. This early period in Earth's history was characterized by the development of simple cellular life forms like bacteria.
In the Precambrian era, Earth was forming and evolving. It is characterized by the formation of the Earth, development of the atmosphere and oceans, emergence of simple organisms like bacteria and algae, and the formation of the first continents.
what era did the gnetophyta evolve.
Well they appeared in the Precambrian Era, as bacteria. The Paleozoic, as trilobites, brachiopods and fish.
Not sure what era but fossils of cats were found that dated back to the Eocene period. Cats came around in the 19th century.
The Precambrian Era. Basically, the only life present in Earth was that of single-celled bacteria.
probably mesozoic era
Vertebrates first appeared during the Paleozoic era.
The prokaryotic cells first appeared about 3 billion years ago. Scientists are not sure but perhaps a few of these bacteria could have been archaea. These appeared in the Pre-Cambrian Era