0
Fossil evidence shows it happened around 600 million years ago (600ma)
Surprisingly, single celled organisms began 3.6 billion years ago and went on being single for 3 billion years.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
When did the first colonial organisms appear on earth?
1.4 billion years ago
What element is likely to be found in the molecules of living organisms?
Carbon. Life on Earth is based on the complex chemistry of Carbon.
Why do complex organisms need specialized cell?
Complex organisms need cells that perform many different functions. Complex organisms are capable of a lot of different things, and that variety needs to be supported on the cellular level. Without them, complex organisms cannot perform different functions.
Which evolved first - organisms with complex body structures or those with simple body structures?
Complex organisms evolved from simple organisms, so simple organisms evolved first.
What was the significance of the development of chloroplasts?
The development of chloroplasts led to the oxygenation of Earth's atmosphere, which allowed the evolution of more complex oxygen-breathing organisms.
What organisms are thought to have been the first to appear on earth?
bacteria
When did the first colonial organisms appear on earth?
1.4 billion years ago
What changes were necessary in earth's atmosphere to allow complex organisms to evolove?
During the few billion years following the appearance of cyanobacteria, oxygen became a major gas in Earth's atmosphere. The ozone layer in the stratosphere also began to develop, shielding Earth from ultraviolet rays. These major changes in the air allowed species of single-celled organisms to evolve into more complex organisms.
What organisms appeared first in earths history?
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.
What element is likely to be found in the molecules of living organisms?
Carbon. Life on Earth is based on the complex chemistry of Carbon.
When did the earliest organisims appear on Earth?
Nobody really knows when the earliest organisms were on Earth. It was definitely more than a million years ago.
What are advantages of human beings are complex organisms?
advantages of human beings are complex organisms
Why do complex organisms need specialized cell?
Complex organisms need cells that perform many different functions. Complex organisms are capable of a lot of different things, and that variety needs to be supported on the cellular level. Without them, complex organisms cannot perform different functions.
How are simple and complex organisms alike?
That depends on which organism. Generally, an organism is more complicated than an organ, but if the organism is unicellular (has one cell) then it could be more simple. Since one celled organisms don't have individual organs, then the anwer is that organisms are more complicated than organs.
Why do they classify species?
The structures of living organisms is very complex and very different from one organism to another; species are classified to group similar kind of living organisms through knowing about their metabolic and catabolic activitiesThis makes it less complex to study the developmenthistory and science of evaluation of living organisms on earth.
Why are complex organisms made up of specialized cells?
Complex organisms need cells that perform many different functions. Complex organisms are capable of a lot of different things, and that variety needs to be supported on the cellular level. Without them, complex organisms cannot perform different functions.
What is the name for a complex organisms groups of organisms?
System
