0
What else can I help you with?
First life appeared how long ago?
Trillions, maybe Quadrillions of years ago. (old answer) On our planet, life begain about 3.8 billion years ago. Heres a timeline http://en.wikipedia.org/wiki/Timeline_of_evolution . And for the other, Inevitably I'm sure their are way more life forms than just on earth. So I cannot say other than that. :) (ask E.T.)lol
Life has existed on earth for how long?
Life on Earth is estimated to have started around 3.5 to 3.8 billion years ago, with the first microorganisms appearing in the ancient oceans. This marks the beginning of the evolutionary journey that has led to the diverse array of life forms present on Earth today.
How many years ago were protists first found in the fossil record?
Protists were first found in the fossil record around 2.1 billion years ago.
What are the major events in earth's history?
Major events in Earth's history include the formation of the planet around 4.5 billion years ago, the development of life around 3.5 billion years ago, the formation of the first continents around 2.5 billion years ago, the rise and fall of dinosaurs during the Mesozoic era, and the evolution of humans in the last few million years. Additionally, significant climate changes, mass extinctions, and the movement of continents have shaped the history of Earth.
What animal was living 1000 years ago?
Many animals that were alive 1000 years ago are still living today, such as the horse, dog, and cat. Other animals that were alive at that time include elephants, crocodiles, and certain species of birds.
Did dinosaurs live two billion years ago?
No, vertebra life has not existed for more than half a billion to a billion years ago. Dinosaurs first appeared about 230 million years ago and died out 65.5 million years ago.
When did earth starts life?
4.5 billion years ago.
Did life exist 1.7 billion years ago?
Yes, life is believed to have existed 1.7 billion years ago based on fossil evidence of simple organisms like bacteria and algae. This period is known as the Mesoproterozoic era and marks an important time in Earth's history in terms of the evolution of early life forms.
How old was earth when life appeared on it?
The Earth is about 4.5 billion years old. Life appeared on Earth about 3.5 billion years ago. The Earth would have been about 1 billion years old at that time.
What were chimps 1 billion years ago?
There were no chimps 1 billion years ago. At that time all life was single celled organisms and rudimentary multicellular ones.
Scientists theorize that human life began about how many years ago?
3.5 billion years ago
Did the first cells appear ten billion years ago?
No. Earth itself is "only" about 4.6 billion years old. The first life may have emerged about 4 billion years ago.
Who was alive 4.5 billion years ago?
4.5 billion years ago, Earth was a young planet still forming, but life had not yet developed. The earliest forms of life, such as single-celled organisms, are believed to have appeared around 3.5 billion years ago.
When do scientists think that life started?
Scientists currently think that life got started between 3.8 and 3.5 billion years ago, probably less than a billion year after the formation of the Earth. It is certain that life existed by 2.7 billion years ago.
How long ago was our solar system formed?
Sciences say that the sun was formed 4,600,000 years ago
How many years were prokaryotes present on earth before the eukaryotes?
* 3.5 billion years ago the first life arose: prokaryotic bacteria * 1.5 billion years ago eukaryotic cells arose Therefore, prokaryotes were present on earth for 2 billion years prior to the emergence of eukaryotic life.
What plants were on the earth 4.6 billion years ago?
It is believed that the Earth was still in a molten state 4.6 billion years ago, so there were no plants or any other complex life forms on the planet at that time. The first evidence of simple life forms appeared around 3.5 billion years ago.
