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Earth formed around 4.54 billion years ago through accretion from the solar nebula. The atmosphere did not contain oxygen and would have been toxic to most living things, including humans.
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoThere were no human beings alive 4.5 billion years ago.
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What was Earths Age According to Geologists?
Uniformitarianism is a basic principle of modern geology and physics, which have arrived at an age for the Earth of 4.54 billion years, plus or minus 45 million years.
Is krakatau still active?
Yes. Krakatoa has had several small eruptions in recent years.
What is the observable universe?
The observable Universe is the part of the Universe we can see from Earth because the light from all the objects in it has had enough time to reach us. Light from outside the observable Universe has yet to reach Earth. The reason we can only see part of the Universe is because of the limited speed of light, and the expansion of the Universe, which is faster than that speed. According to Einstein, nothing in the Universe can move faster than light, but nothing stops the expansion of space from moving faster than light. This results in a large part of the Universe being completely invisible to us.
Dominant oganisms in the Cenozoic era?
The Cenozoic Era started 65.5 million years ago and still is the current era. It is widely recognised as the era of the mammal but this is a very simplistic view. For several million years after the KT-Event the most dominant animals where the Terror Birds. In South America this dominance only ended about 2 million years ago soon after it joined with North America and species of saber toothed cats took over. From as long ago as 45 million years ago mammals such as Andrewsarchus on land and Basilosaurus in the oceans had come to dominate most environments on Earth. One major exception to mammalian domination is flying animals. The sky during the Cenozoic has been mainly dominated by the decedents of dinosaurs, the birds. Other smaller environments such as the everglades in southern Florida the dominant animals are the Reptilian Alligators. One mammal however has become the most dominant species on earth, Human Beings. Starting from about 200,000 years we started to slowly dominate Africa and about 70,000 years ago we started to colonise the rest of the planet. We now are the most dominant species in every environment.
When and where did Marie curie conduct her experiment?
Marie Curie conducted experiments 45 years then retired
How many years is a billion minutes?
1 billion minutes = 1,901.32 years
When was world made?
Present estimates put the age of the earth at 4.54 billion years, plus or minus 45 million.AnswerAccording to the Bible it was created 6000 years ago.
What year was 45 years ago?
1969 = 2014 - 45
How many years ago did the first dog go into space?
45 years ago
Do you die if you play the wigi board?
I have been retired for over 7 years now and I probably last used a Wigi board 45 ? years ago and I'm still alive
How long was Whitney Houston alive?
45 years
What year was 43 years ago?
It is 2011 now :')And 45 years ago it would have been 1966
How many years ago did jeannie baker get married?
45 years
When did the radios start getting advanced?
about 45 years ago
What is improved on the telivision 45 years ago?
The sound and the color
Is Edgar still alive?
Yes, Edgar Prado is still alive he will soon be 45 years old.
If im 75 years old know how old was you 30 years ago?
45
