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Earth's surface changed many times during the Precambrian (which is the time between when Earth first formed and when the Cambrian began, and makes up 7/8 of Earth's history).
In the beginning, Earth was a giant mass of magma, but it eventually cooled enough to have a stable crust. Then, water vapor in the atmosphere condensed and fell as rain, eventually covering the Earth in a giant ocean, which was green because of dissolved iron.
Life, (in the form of simple bacteria), first evolved about 3.5 billion years ago. However, it did not change Earth's climate or the appearance of its surface until the first photosynthesizing organisms (which were cyanobacteria) evolved at least 2.8 billion years ago. The oxygen that they produced first oxidized the iron in the oceans, which made the iron sink, and the oceans became blue, as they are today. Eventually, carbon dioxide levels became so low, and oxygen levels so high, that the Earth underwent such dramatic cooling that ice covered the ocean all the way to the Equator for millions of years.
Meanwhile, continents formed, joined together into supercontinents, and then broke back up again. However, the continents were completely different in both shape and position during the Precambrian than they are today.
Lastly, it is important to note that there is no evidence of any form of life on land, nor of multicellular organisms, until after the Precambrian (e.g., the Cambrian).
What else can I help you with?
What would land surface look like after one million years?
it will be matrix and robots world
What was earths form like 320-286 million years ago?
it was the same sort of but all countries were joined toghether and there were only plants and dinosous and so on
How does earths surface and the structures on the surface change as a result of an earthquake?
The surface of the Earth can be changed by resulting from outer space, like from a meteor strike.
How does earths surface and the structures on the surface change as result of an earthquake?
The surface of the Earth can be changed by resulting from outer space, like from a meteor strike.
What is the land surface like on mars?
its moslty like earths expect dried out with lots of iron and red
How did the earths surface looked like in the during the era of the dinosaurs?
It was all forest and water
What does plate mean like in science?
they are under the earths surface and cause earth Quakes
What is a rounded shape somewhat like a half ball?
A hemisphere.
What did the earths surface look like in the Cambrian time?
During the Cambrian period, around 500 million years ago, the Earth's surface looked vastly different from today. The supercontinent of Gondwana covered much of the southern hemisphere, while ocean basins were expanding. The land was mostly barren, with simple plants and algae beginning to emerge.
What did the earths surface look like during the silurian period?
Type your answer here... it was wet and the surface was covered with a thin layer of warm water.
What percent of the earths surface does the Atlantic ocean?
i believe roughly 70% (not completely sure though) I'm not really sure, but something like 70% of the earths surface..
How does weathering and erosion shape earths surface?
Weathering breaks down rocks into smaller pieces, while erosion transports these pieces to new locations. Over time, these processes can create features like valleys, canyons, and coastlines, shaping the Earth's surface.
