1.4 billion years ago
The first organisms to appear on Earth were likely single-celled microorganisms such as bacteria and archaea. These organisms emerged around 3.5 - 4 billion years ago in a primordial soup of chemicals and developed into more complex life forms over time.
blue green algae archebacteria
the first plants appeared about 3000 years ago. the first plant was algae.
Pre-Cambrian. It's when bacteria first came about.
Invertebrates first appeared on Earth over 550 million years ago during the Ediacaran period. These early invertebrates were simple organisms without backbones and laid the foundation for the diverse array of invertebrate species that exist today.
bacteria
The first type of organisms to appear on Earth were single-celled prokaryotic organisms, such as bacteria and archaea. These organisms are among the most ancient forms of life and played a crucial role in shaping the planet's early environment.
The first organisms to appear on Earth were likely single-celled microorganisms such as bacteria and archaea. These organisms emerged around 3.5 - 4 billion years ago in a primordial soup of chemicals and developed into more complex life forms over time.
The first organisms to appear on Earth were single-celled prokaryotes, such as bacteria and archaea. These simple organisms are thought to have emerged around 3.5 billion years ago in ancient Earth's oceans.
The most primitive life on Earth are single-celled organisms such as bacteria and archaea. These organisms have simple cell structures and are thought to have been some of the first life forms to appear on Earth billions of years ago.
The first life on Earth is estimated to have appeared around 3.5 to 4 billion years ago in the form of single-celled organisms. These early life forms evolved into more complex organisms over time.
Elemental oxygen did not appear on Earth until some time after life did. In fact, the oxygen was produced by life carrying out photosynthesis. The first organisms on Earth were anaerobic, meaning their life processes did not involve oxygen. To most organisms like this, oxygen was highly toxic.
The first organisms on Earth were likely simple single-celled prokaryotes, such as bacteria and archaea, that appeared around 3.5 billion years ago. These early organisms were anaerobic, meaning they did not require oxygen to survive. These primitive life forms eventually evolved into more complex organisms over millions of years.
Bacteria are believed to have first appeared on Earth over 3.5 billion years ago during the Archean Eon. These simple single-celled organisms are among the earliest forms of life on our planet.
Life is believed to have first appeared in Earth's oceans around 3.5 billion years ago. This was in the form of single-celled organisms like bacteria and archaea. These early life forms were the foundation for all subsequent life on Earth.
Bacteria.
yes