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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
What else can I help you with?
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.
What is the first animals and plants at the start of the earth?
The first life on Earth were likely single-celled organisms such as bacteria and archaea that appeared around 3.5 billion years ago. The first plants appeared around 470 million years ago, while the first animals, such as simple sponges and jellyfish, emerged around 600 million years ago during the Ediacaran Period.
When did the duck first appear on earth?
The first birds are thought to have appeared in the late Jurassic period, between 150 and 200 million years ago. Modern duck species have traits that are closer to some theropods (dinosaurs) than are most land-based birds.
When did abundant fossil evidence first appear in the geologic record?
Abundant fossil evidence first appeared in the geologic record during the Cambrian Period, around 541 million years ago. This period is known as the "Cambrian Explosion" because it marked a rapid diversification of marine life and the emergence of many major animal groups.
How are plants from long ago like animals of long ago?
The plants from long ago are like animals of long ago in a couple of ways. Both have survived through time.
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.
Where did first life develop?
The first life developed in the oceans. That was so long ago that it has not been possible to tell where or in which ocean.
How long ago did multicellular life forms appear in the fossil record?
According to the fossil record, multicellular life forms first appeared about 570 million years ago. This means multicellular organisms appeared almost 3 billion years after the first evidence of life.
How many millions of year ago did the first unicellular life appear?
Slightly more than 3000 million years ago, perhaps even as long as 3500 million years ago shortly after the earth's crust cooled just enough for bodies of liquid water to accumulate on its surface.
How long did earth exist before the first life forms?
The Earth formed about 4.6 billion years ago, and the first life forms are believed to have appeared around 3.5 to 4 billion years ago. This means there was a period of roughly 500 million to 1 billion years between the formation of Earth and the emergence of life.
When did life first appear on land?
Life first appeared on land around 500 million years ago during the Ordovician Period. Plants and some arthropods were among the first organisms to colonize terrestrial habitats, followed by amphibians and eventually reptiles.
When was first species on earth?
Scientific AnswerThe first bacterial life to appear on Earth was 3.46 billion years ago in the Precambian supereon. The first complex life appeared around 600 million years ago just preceding the Cambrian Explosion of life 530 million years ago.
When did animal life first appear in the oceans?
Animal life first appeared in the oceans around 600 million years ago during the Ediacaran period.
When did crime start falling across the country?
It became like this from a long, long time ago. It started when humans first appeared on Earth. Like about millions of years ago.
How long was there no life on earth?
There is evidence to suggest that life on Earth first appeared around 3.8 billion years ago. However, there likely were periods of time when life faced significant challenges, such as during mass extinction events like the Permian-Triassic extinction around 252 million years ago.
Fish appeared on Earth about how long ago?
2years ago :)
When did life first evolve on earth?
It is generally believed that life first appeared sometime around 3.8 billion years ago. The first life forms were simple, single celled organisms with no nucleus. The first photosynthetic organisms were cyanobacteria, and the evolved about 3 billion years ago. Life first began a rapid amount of diversification during the Cambrian, a little more than 500 million years ago.
