Table of Contents
What was prehistoric Earth like?
470 million years ago At the beginning of the period, around 485.4 million years ago, the climate was very hot due to a high concentration of CO2 (4200 ppm) in the atmosphere, which gave a strong greenhouse effect. By contrast, today the concentration is just above 400 ppm.
What was the Earth like million years ago?
The universe grew and cooled and eventually stars and galaxies formed. The Earth was formed about 4.6 billion years ago, that’s 4,600,000,000 years ago….Earth’s Tectonic History.
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What did Earth look like when dinosaurs were on it?
The Earth had heavy vegetation near costs, lakes, and rivers, but desert in its interior. During the Jurassic Period, the continents gradually broke apart. The world was warm, moist, and full of green plants. During the Cretaceous Period, most of the continents had separated.
What did the earth look like 450 million years ago?
450 million years ago. Ancient Earth (450 million years ago). Late Ordovician. Life continued to flourish during the Ordovician as it did in the earlier Cambrian period, although the end of the period was marked by the Ordovician-Silurian extinction event. The seas are diverse and the first coral reefs have emerged.
What did life look like on ancient Earth?
Life is evolving in the sea, and multicellular life is just beginning to emerge. Late Ediacaran. Bacteria and green algae were common in the seas, as were the enigmatic acritarchs, planktonic single-celled algae of uncertain affinity.
How old is the Earth according to science?
There are two viewpoints on the conditions of the ancient Earth, scientific theory and Scriptural revelation. Scientists estimate that the age of the planet dates back to about 4.5 billion years ago at the beginning of an obscure geologic time named the Hadean Eon.
What was the climate like in ancient times?
At the beginning of the period, around 485.4 million years ago, the climate was very hot due to a high concentration of CO2 (4200 ppm) in the atmosphere, which gave a strong greenhouse effect. By contrast, today the concentration is just above 400 ppm.