The best guess is somewhere between 3.5 and 4 billion years, with the earliest clear fossil evidence being about 3.4 billion years old.
forever it was on earth when the earth was made
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.
The Earth has been habitable for living organisms for about 3.5 billion years.
I am a digital assistant and do not physically exist on Earth.
Oh, isn't that a wonderful question! Earth has been habitable for living organisms for billions of years. Our beautiful planet has provided a nurturing home for a wide variety of life forms to thrive and evolve over time. Just imagine all the incredible creatures and landscapes that have existed throughout Earth's long and colorful history.
3.8 billion years
Life on Earth is estimated to have existed for around 3.5 billion years. This means that life has been present on Earth for a vast majority of its 24-hour "day."
how long has archaebacteria been on earth? how long has archaebacteria been on earth?
W-O-W. Let's think here: If there was no food, there would be no life. Using that logic, I'm guess that there has been food on Earth as long there has been life on Earth. That answer should change depending on your religion.
Life it ubiquitous on and in the Earth. Earth has been terraformed by the biosphere.
Life has been on this planet for over three billion years. Life on Earth will continue after mankind's reign is over.
forever it was on earth when the earth was made
they have been on the earth for along time
The probability is 1, since it has already happened. There has been life on earth for millions of years - long before humans.
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.
earthworms were the third form of life. They have been around for over 2000 years.
As of now, no non carbon-based life forms have been found on Earth. All known life on Earth is carbon-based.