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Sometime back in prehistory, when the Earth had cooled enough, and stayed cool long enough.
The first piece of ice formed somewhere in space billions of years ago, long before earth existed.
yutguyguyffg
it was formed from extreme pressure for a long time under the earth.
4.6 billion years ago the earth was formed
We believe that our solar system, including the Sun, Earth and all the other planets, formed about 4.5 billion years ago
Antarctica should last as long as the earth lasts.
Paramecium are single-celled organisms that were first discovered in the 17th century. Scientists believe paramecium have been around since the Earth was formed.
No one knows for sure. Although the first carbonic acid on earth formed naturally billions years ago.
No and no. Uranium was formed before the Earth formed. Even the uranium that's IN the Earth was formed before the Earth was formed, by the process of stellar nucleosynthesis. Also, the most stable isotopes of uranium do have very long half-lives, but they are still radioactive, meaning that they eventually will decay into other materials.
A very long time.
half a billion years left. But that does not mean that PEOPLE will last that long. ;-)