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3.5 billion years ago is the oldest direct evidence for life on Earth. Direct evidence is found in 3.5-billion-year-old rocks in which several microorganisms have been identified. These microogranisms are much like cyanobacteria which is found in abundance throughout the Earth today.
3.8 billion years ago is the oldest indirect evidence for life on Earth. Indirect evidence is found in 3.8-billion-year-old banded iron deposits (chert) which contain a Carbon 13 to Carbon 14 ratios similar to ratios found in organisms today.
What else can I help you with?
Where did life start?
Life first began in the oceans, billions of years ago.
Did mankind start in ocean?
Life started in the oceans and seas.
What is called the foundation of life in the oceans?
Marine life is the term used to describe the foundation of life in the oceans.
What are primal oceans?
primal oceans are oceans that are fresh watered oceans thatmarine life animals can live in and can adapt to
Do hurricanes start in Europe?
No, they start in tropical oceans.
Where do rivers start or have their sources?
oceans
Can a desert exist in an ocean?
There are areas of some oceans that are devoid of life but there are no deserts in oceans.
What two oceans start with the letter A?
Atlantic and Arctic
True or false The Arctic and Antarctic oceans have few species of marine life because of the cold waters?
TrueAnother AnswerCold water oceans are the most productive oceans on earth in terms of animal life.
Where was the birth place of primitive life-form on earth?
The oceans, probably. most def the oceans
What country had the advantage in the oceans at the start of the war?
England
What life forms exist in the oceans?
fish
