It didn't get IN there sometime or somehow, it just WAS there ALL the time, from the very beginning.
by the plants
Sciences say that the sun was formed 4,600,000 years ago
No, water did not come from the asteroids a billion of years ago.
About 65 million years ago.
about 23 years ago
Vesuvius, in Italy, was formed a few thousand years ago. Its biggest eruption was about 2,000 years ago. Lava temperature rised up to 900 degrees. Its last eruption was about 63 years ago.
about 4.5 billions years ago.
The mantle is not the evidence of how earth looked like when it was first formed 4 billions years ago, but the biogenic graphites.
Sodium chloride is formed after the evaporation of water from sea and oceans, billions years ago.
The continents were formed after Pangea broke up, about billions of years ago, and the first signs of human civilization were 6,000 years ago.
Yours and mine. It was formed right here, a few billions of years ago
At the same time life began on Earth billions of years ago is when germs formed.
The elements in your body were once part of a star - billions and billions of years ago! Earth and everything on it was formed in space from bits and pieces of "star stuff."
It is believed to have occurred 13.7 billion years ago.
The primary factor that was missing for billions of years that was necessary for protists to evolve was oxygen in the atmosphere. Billions of years ago, the atmosphere was mostly made up of carbon dioxide, carbon monoxide, hydrogen, nitrogen, and water vapor.
The primary factor that was missing for billions of years that was necessary for protists to evolve was oxygen in the atmosphere. Billions of years ago, the atmosphere was mostly made up of carbon dioxide, carbon monoxide, hydrogen, nitrogen, and water vapor.
No one knows for sure. Although the first carbonic acid on earth formed naturally billions years ago.
Sciences say that the sun was formed 4,600,000 years ago