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Scientists theorize that human life began about how many years ago?
Wiki User
∙ 10y ago
3.5 billion years ago
Wiki User
∙ 14y ago
Wiki User
∙ 10y ago4.5 mil
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What scientists have worked on the theory of emergence?
There have been many scientists that have worked on the theory of emergence over the years. Emergence theory has been written about by scientists such as Julian Huxley and John Stuart Miller.
Why did scientists debate the nature of electromagnetic radiation for more than 200 years?
They lacked a definitive answer.
Do you think the contributions of these scientists are still valuable even though some were made hundreds of years ago?
You didn't say what scientists, but science today is built on the contributions of scientists from long ago. There are many examples but prominent among them Is Isaac Newton.
Scientists have only come to accept and use the scientific method in the last 3 or 4 years true or false?
False
What made scientists accept Alfred wegener theory years later?
Accumulating data, especially proof of sea floor spreading.
The first living cell originated?
Scientists theorize that the first living cells appeared spontaneously. They believe the process took place around four billion years ago.
Human habitation of the Americas began approximately?
Human habitation of the Americas began approximately 30,000 years ago
How long ago do scientists think that the continents began to separate?
200 million years
Where is North America Did the Grey Squirrel arrive?
The Grey Squirrel is the most common species found in the United States. It has been in the country for around 50 million years and scientists theorize it entered North America through Canada.
What lead scientists to believe that life began some 4.5 billion years ago?
By looking at the fossil records, scientists were able to say approximately when life began. They used radiometric dating of rock layers as one method. See links below for further information:
Human beings as we know them have existed for about years.?
Which theory states that Homo sapiens began in a single geographical area and spread out from there
Human beings as we know them have existed for about what years?
Which theory states that Homo sapiens began in a single geographical area and spread out from there
What term do scientists apply to the Cenozoic era?
It is sometimes considered the "Age of the Mammals".
Scientists have discovered human remains thought to be more than 2 millon years older then Lucy a skeleton found in Ethiopia Explain the supporting paragraphs which are process analysis details and ex?
Scientists have discovered human remains thought to be more than 2 million years older than Lucy, a skeleton found in Ethiopia
Most scientists believe the first early human beings evolved from which species about two million years ago?
Most scientists believe that the first early human beings evolved from a species called Australopithecus around two million years ago. This transition marked the emergence of the Homo genus, which eventually led to the development of modern humans.
According to scientists how many years have people lived in the Arctic?
Scientists estimate that people have been living in the Arctic for at least 30,000 years, with some evidence suggesting a presence as far back as 50,000 years ago. This is based on archaeological findings of ancient human settlements and remnants of tools and artifacts.
Who created dog years?
Scientists who decided it would be a good idea to make a ratio between how long dogs live and how many human years old they are so that humans could compare their dogs age to what a human would act like at that age.
