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How was the earth like before evidence of life was found 3.5 to 3.9 billion years ago?
Wiki User
∙ 10y ago
It was lifeless. No trees, flowers, no animals of any kind. Solar radiation would have killed us. And there was very little oxygen in the atmosphere.
Wiki User
∙ 10y ago
Before evidence of life was found on Earth 3.5 to 3.9 billion years ago, the planet was likely very different from what we know today. It was a harsh and inhospitable environment, with a very different composition of gases in the atmosphere. The Earth's surface was also subjected to frequent volcanic activity and intense meteorite bombardment.
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How old are living things?
Simple life forms like bacteria have on the Earth for about 3,500,000,000 years ago (3.5 billion years). Evidence of this was found in very old rocks in Australia. The estimated age of the earth is 4.5 billion years so life originated just 1 billion years after the earth formed.
When was the earth's moon found?
The Moon has been here since before life on Earth began. We believe that the Moon was formed of the debris blasted out of the Earth when another planet plowed into the pre-Earth, and essentially merged with it. This would have been when the Earth was still in the process of formation, about 4.5 billion years ago.
How old are the oldest fossils of bacteria?
Stromatolites have been dated back to as far as 3.4 billion years ago, and are amongst the oldest known fossils found on Earth. Stromatolites are still present today, and can be found in very salty lakes, and marine lagoons.
What evidence indicates our solar system is about 4.5 billion years old?
The age of the Solar System HAS TO BE at least as much as that of the oldest rocks found on Earth, other planets, or asteroids (if you assume that those rocks come from the Solar System) - and that's what has been found. And that's the approximate age of the oldest rocks found. The main methods used rely on radiometric dating. For more information, check the Wikipedia (or other sources) for:* Age of the Earth* Radiometric dating
What is the age of the oldest cyanobacteria fossil found?
The oldest known cyanobacteria fossils are known as stromatolites and fossils have been found that date back 2.72 billion years old. More recent discoveries however suggest that cyanobacteria may date back as far as 3.5 billion years into Earth's past.
How many years ago did life begin in the Ocean?
3.5 billion years ago is the oldest direct evidence for life on Earth. Direct evidence is found in 3.5-billion-year-old cherts (rocks deposited in the ocean) 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 is the Oldest evidence of life on earth?
The oldest evidence of life are single celled organisms that are found in rock and mineral samples. These date back to approximately 3.5-3.8 billion years ago.
How old are living things?
Simple life forms like bacteria have on the Earth for about 3,500,000,000 years ago (3.5 billion years). Evidence of this was found in very old rocks in Australia. The estimated age of the earth is 4.5 billion years so life originated just 1 billion years after the earth formed.
When did life in the oceans start?
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.
Has any planet crashed into earth?
Some 4.5 Billion years ago, a planet named "Thea" crashed into earth. This planet was about the size or Mars. Before Thea crashed into Earth, Earth was nothing more than a toxic wasteland. No No No this did not happen this was just a myth on the news but for a matter if fact thy have found a skeleton of some sort that was 5 billion years old ans that's the answer if u dnt believe me then don't but that's a fact Don't listen to the FTard in the paragraph above...it most certainly did happen; scientists have the evidence. There is no 5 billion year old skeleton, either.
When was the first evidence of life?
In Australian rock of about 3.5 billion years old they have found a filamentous prokaryote.
How much of ruthenuim is found on earth?
1 part per billion by weight, 0.2 parts per billion by moles.
When were the first prokaryotic cells found on earth?
About 3.5 billion years ago
What planet have scientists found evidence of life on?
So far Earth. They do have robots on Mars so they could be evidence.
What appeared 3.5 billion years ago?
Through the evidence of microfossils, the first signs of life appeared on the planet earth. These simple life forms were prokaryotes shared many similarities to the bacteria that are currently present on our planet. The evidence of these microbes have been found in ancient pillow lava.
Where life arises from nonliving matter?
Abiogenesis refers to the process of life arising from nonliving matter. The earliest physical evidence for life on Earth was found in a 3.7 billion-year-old metasedimentary rock, which was a biogenic graphite.
How old is the fossil?
The oldest fossil found on earth is 3.5 billion years old
