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How does the span of multicellular animal life on Earth compare with the total age of the Earth?
Multicellular life forms have only existed for roughly one-twelfth of the total age of the Earth.
What type of life forms existed on earth?
Various life forms have existed on Earth, including bacteria, plants, animals, and humans. These life forms have evolved over billions of years to adapt to different environments and ecosystems on our planet. Additionally, extinct life forms such as dinosaurs and ancient mammals have also played a significant role in Earth's biodiversity.
If earth is 24 hours a day How long has life been in place?
Life on Earth is estimated to have existed for around 3.5 billion years. This means that life has been present on Earth for a vast majority of its 24-hour "day."
How many years did earth exist before there was evidence of life on?
Earth is estimated to be around 4.6 billion years old, and evidence of the first life forms dates back to about 3.5 billion years ago, in the form of fossilized microorganisms. This means there were around 1.1 billion years of Earth's existence before evidence of life appeared.
How does the water molecule existed on the Earth?
Water molecules have existed on Earth since its formation billions of years ago. They were likely brought to the planet by icy asteroids and comets during its early stages. Water is essential for life as we know it and has played a crucial role in shaping Earth's geology and climate over time.
When was sky first made?
sky was not made . it existed before there was life on the earth.
What year did Saturn form its rings?
No one knows. Certainly before life existed on earth
Who invent radius of earth?
If you are a believer, then God did but if you are not, then nobody did. The radius of the earth existed and therefore ots radius did before there was any form of life on earth to invent it.
Is life on Earth possible without bacteria?
no because bacteria helps digest our food and it also is one of the main decomposers.
For what percentage of time has life existed on Earth?
Life has existed on Earth for approximately 3.5 billion years, which accounts for around 75% of the total time that the planet has existed (about 4.6 billion years).
What percentage of time has life existed on earth ( round to the nearest whole number?
Life on Earth has existed for approximately 3.5 billion years. Given that the Earth is about 4.5 billion years old, life has been present for around 78% of Earth's history. Rounding to the nearest whole number, life has existed on Earth for about 78% of the time.
Did any animal existed before dinosaur?
There was absolutely no life on land before the dinosaurs. Every living creature was in the sea before dinosaurs roamed the Earth.
For what fraction of geologic time life has existed on earth for what fraction of geologic time have human existed on the earth?
Approx 1/22500 of it.
For how long were prokaryotes the only kind of life on earth?
Prokaryotes were the only kind of life on earth approximately 2 billion years ago. They existed long before eukaryotes ever came into existence at all.
What life forms existed first on Earth?
The earliest life forms on Earth were likely single-celled microorganisms such as bacteria and archaea. These organisms appeared around 3.5 to 4 billion years ago in ancient oceans and are thought to be the ancestors of all life on Earth today.
How long have germs existed?
since the creation of life on Earth.
How many earthquake has Arizona had?
the whole earth has got many earth quakes . it got earth quakes before human life existed so you just cant count the number of earthquakes a place has had
