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The Earth has been habitable for living organisms for about 3.5 billion years.
Humans have been on Earth for approximately 0.2% of Earth's history, which is estimated to be around 4.5 billion years. This means humans have been around for about 200,000 years.
forever it was on earth when the earth was made
Modern humans, or Homo sapiens, have been on Earth for about 0.2% of Earth's history, which is approximately 200,000 years. Earth is estimated to be around 4.5 billion years old.
The earth has never been alive. It has been in existence in its present form for about 5 billion years. Some creatures inhabiting it have and are alive.
how long has archaebacteria been on earth? how long has archaebacteria been on earth?
they have been on the earth for along time
They have been on earth since 190 million years ago.
Well it depends on what you mean. The distance for how long it takes, or the time as in how long since Earth was made. Earth as you know has been here a long long time. Stars light has been shinning towards Earth eversince it was made. To see how long it takes for a stars light to reach Earth depends on how distant and huge the star is.
long time
for as long as it has had continents
A very long time.
i have been on this earth for 8 years
guinea pigs been on earth more than 3,000 years by:taliyah
since the earth began its existence
Cotton has been 'used' as long as cotton has grown upon the Earth.
It is not known exactly how long the moth has been on earth. However, fossils of moths have been found that date back more than 190 million years.