The Precambrian Time
Important Details-
The Precambrian time, also known as “The Beginning Of Time” began 4.6 BYA (billion years ago) and ended 543 MYA (million years ago). The Precambrian Time is Earth’s earliest era. Energy from collisions caused Earth to get extremely hot. Scientists hypothesize Earth melted from the extreme heat. Although climate did often switch or change from hot or cold. Climate near the poles was so warm there was no glaciers. Land Masses near or around the equator were cold enough to form glaciers. The Precambrian Time’s continents were often moving. Continents move a few centimeters a year. This process is called “The Continental Drift”, land would come together, move apart, and crash together to make new land masses. Land was north, south, east, and west of the equator. Although land is mostly on the west side of the prime meridian. Land was mostly made of sedimentary rocks. The oceans were created because the water evaporated and then rained down again. The rain then flooded any trenches in the ground, creating oceans. The Precambrian Time had drastic temperatures and continents always moving.
Life and Extinction:
The Precambrian Time was the start of life forms and they have changed extremely from then and now. Life began four billion years ago and the first multi-celled organism appeared six hundred million years ago in the Ediacaran Period. In the beginning of the era around eight hundred million years ago oxygen grew high enough letting more complex organisms breathe. Microscopic bacteria was the earliest living organism and they appeared, 3.4 billion years ago. Bacteria then found a new energy resource by using the sun, then creating photosynthesis. Photosynthesis led to simple plant life later on. At the end of the era the Vendian Extinction occurred, 543 million years ago. Single celled algae and Ediacaran animals disappeared from the fossil record. Soft bodied animals and single celled algae became extinct. Alot happened in the Precambrian Time, but even more things happen later on, so keep reading to find out what exactly happens in the Paleozoic Era.
Important Details-
The Precambrian time, also known as “The Beginning Of Time” began 4.6 BYA (billion years ago) and ended 543 MYA (million years ago). The Precambrian Time is Earth’s earliest era. Energy from collisions caused Earth to get extremely hot. Scientists hypothesize Earth melted from the extreme heat. Although climate did often switch or change from hot or cold. Climate near the poles was so warm there was no glaciers. Land Masses near or around the equator were cold enough to form glaciers. The Precambrian Time’s continents were often moving. Continents move a few centimeters a year. This process is called “The Continental Drift”, land would come together, move apart, and crash together to make new land masses. Land was north, south, east, and west of the equator. Although land is mostly on the west side of the prime meridian. Land was mostly made of sedimentary rocks. The oceans were created because the water evaporated and then rained down again. The rain then flooded any trenches in the ground, creating oceans. The Precambrian Time had drastic temperatures and continents always moving.
Life and Extinction:
The Precambrian Time was the start of life forms and they have changed extremely from then and now. Life began four billion years ago and the first multi-celled organism appeared six hundred million years ago in the Ediacaran Period. In the beginning of the era around eight hundred million years ago oxygen grew high enough letting more complex organisms breathe. Microscopic bacteria was the earliest living organism and they appeared, 3.4 billion years ago. Bacteria then found a new energy resource by using the sun, then creating photosynthesis. Photosynthesis led to simple plant life later on. At the end of the era the Vendian Extinction occurred, 543 million years ago. Single celled algae and Ediacaran animals disappeared from the fossil record. Soft bodied animals and single celled algae became extinct. Alot happened in the Precambrian Time, but even more things happen later on, so keep reading to find out what exactly happens in the Paleozoic Era.