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Summary The history of the formation earth divided as four eras,Archaic Times,paleozoic era(primary age),mesozoic era(secondary era).
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The history of the formation of the earth into 4 eras.1. Archaic Times
This era is one of the oldest,approximately 2,500 million years old.
In archaic Times the earth was still so hot that there was no life.
2. Paleozoic era (primary age)
Estimated age at this time 340 million years.at this time it is thought that there were types of small
animal,as for invertebrates there were also types of fish,amphibians and even thpes of reptiles.
3. Mesozoic era (secondary era)
This era began the existence of the life of large animasi,for example dinosaurs and atlantosaurus.
Reaching 12 meters and even 30 meters in length.
At this time there was already the life or a nation of birds,but most of the animals,a nation of
reptiles,lived at least 140 million years ord.
4. Neozoic/kainozoic era the age of this age is estimated at about 60 million years.
The neozoic age is divided into two:
1. Tertiary age
There is the life of mammals and there are also types of monkeys.
2. The quaternary age
Approximately 600,000 years ago,there are also signs of human life.
This era is divided into 2 Times:
1. Kala plestosin
There was already life on earth.
2. Kala holosin
Already around 3 million 10,000 years BC.
Is should be noted that when human life begin,that is what is called ancient Times.
The centers of world's oldest civilizations
1. The results of ancient Egyptian Civilization in the valley of the Nile river(4000-3000 BC).
You need to know that the Egyptian region is located on the Northern African continent,in the
middle of the country of Egypt there is the Nile river with very fertile valleys. This is because the
valley of the Nile river is like very fertile soil,so that agriculture in Egypt has advanced.
Apart from farming,the Egyptian people were also good at making handicrafts in the the from of
household untensils Made of clay and metal,they were also good at weaving flax and rugs and the
were even able to make perfume and incense.
The results of their craft have been trade to various countries,so that even in the world of trade they
have progressed.
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