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From the oceans
They believe that Indians used rock art as communication, tradition, telling a story using pictures, and just for their own entertainment.
Scientist think the day the world is going to end is on December 21st, 2012
Acceation of dust and gas about 4.5 billion years ago.
I have never heard that scientists think the sun will explode. I do know they predict that our sun will eventually burn out. But its so far away, it takes billions of years for the dark to reach Earth. So I'm not too worried about the sun blowing up or burning out.
an atmosphere an atmosphere
there are 5 layers of atmosphere.i think trposphere is the innermost layer of the atmosphere
i think there isn't because of Uranus' atmosphere but scientists believe that deep in Uranus' atmosphere there is land
scientists found the fossils of triceratops
# what i think you meant was troposphere and it is basically the lowest layer of the atmosphere. The atmosphere is divided into different layers, and this layer happens to be the closest to Earth.
I think they are called meteorologists.
Rodiometric dating
The Troposphere. That is where nearly all of the weather takes place.
Because scientists are so picky they needed to be seperated.
It may have oceans of liquid water under its layers of water ice. Scientists want to know if these oceans (assuming they are there) contain any forms of life.
troposphere i think
there was no oxygen in Earth's early atmosphere.