Read your science book chapter . It is on the first page.
During the Archaean Eon
The oldest organism ever to appear on the face of the Earth, was probably the Cyanobacteria. This organism, dates back to 2.8 billion years ago. Cyanobateria was the first organism with the ability to perform oxygenic photosynthesis and is thought to have converted the early reducing atmosphere into an oxidizing one, which dramatically changed the composition of life forms on Earth by provoking an explosion of biodiversity and leading to the near-extinction of oxygen-intolerant organism.
Multicellular organisms first appeared during the Vendian period.
yes
The second organism that appeared on Earth was likely a simple single-celled organism, possibly a prokaryote such as a bacterium. This would have followed the appearance of the first organism, which was also likely a simple organism.
Chick or the egg!
In someones pants??
A single celled organism.
bacteria
well the first thing was algae...and formed from there on
bacteria
The first organism on Earth was a bacterium, from what current science tells us. The Earth was composed of single-celled organisms in the beginning of the world.