Life Before Human Roamed The Earth, History of human life on earth ,geological history of earth

Earth History



Earth,How It Formed ,Were There any Advance Civilization-
Earth as We all Knows That Big Bang Was Behind The Universe and  The Earth Formation ,Now Earth Formed 4.5 Billion Years Ago The Earliest  Undisputed Evidence Of Life On Earth dates at least from 3.5 billion years ago,during the Eoarchean Era. From The First Human Walked The Earth . It Has passed Many Phases From Continent Drfting, To Phasing Dinosaurs  Conqueror and after The Human Arrival Mysteries Of Ancient Civilization.


How Life Arose on the Earth?

Earth Formation


As The Solar Nebula(Gaseous Cloud) Blasts a Core Of This Solar Nebula Formed To earth Now Initially Earth Was So Hot It doesn't Have It s Own Atmosphere, meteoroids Were Continuously Falling On The earth, Volcanic Eruption Were  Continuously Taking Place ,increase in gravity  lead to a cooling of the Earth and all The Gases Ejected By The Volcanic Eruption Started Creating Our Atmosphere ,Continously Raining and Thunderstorms For Millions Of Years Years Creates Large Oceans and During This a Planet Called Thiya Collides With Earth Due To Which Some Part Of Earth Detach From Earth and Formed Into Moon,Now Slowly-Slowly Life Started Arising On The Earth First Unicellular Form Arrived 3.5 Billion Years ago.  More complex forms of life took longer to evolve, with the first multicellular animals not appearing until about 600 million years ago and According To Theory Of Abiogenesis Life Was Created By In Organic Molecules  Like Amino Acids,Water Vapour and Etc Which Recombines Due To Energy Inputs and To Prove This Miller and Urey (Two-Scientists) also Proved This In Their Experiment also Called as "Miller Experiment".

How New Creatures Evolved?

Now, Slowly Oxygen Amount Started Increasing on The Earth Organisms Inside The Water Started Evolving According To Environment Some Of The Organisms Who Wants To Walk in the Land Evolved Themselves Called as Amphibians,With The Time More Organism Evolved and Many New Creatures Evolved.

Dinosaurs History,Earth temperature history,global temperature history



When  New Creatures Were Evolving On The Earth,On That Time Dinosaurs also Made Their Feet To The Earth Now Dinosaurs Were Of  Diff Types Some Were Herbivorous ,Some Were Carnivorous Some Could Fly and Some Could also Live In Water. Dinosaurs Were Known as The Dominant Species Before Human Arrival , They Were Oviparous Means They Lay Eggs Now,as Dinosaurs Had Not any Type Scare To any Species Except Them Because Some Dinosaurs For Food ate Other Dinosaurs and To show Their Dominance They Also Fought With Each Other, Dinosaurs  and between the Cretaceous and Paleogene eras, about 66 million years ago, at a time when there was worldwide environmental change resulting from the impact of a large celestial object with the Earth Created Vocanic Eruption Due To Which Temp Rises To 200 Degrees and all organisms Except Some Got Extinct,and From There Mammals Evolve ,Dinosaurs Rules The Earth For Approx 160 Million Years.

How Human Evolved?
Human Evolution


Now Mammals Were Evolving Slowly -Slowly They Evolve More and Evolved into Monkeys and Chimpanzees and They Got Evolved Into First Human Like Form Called as Dryopithecus
The correct chronological order of the Evolution  stages in human evolution is Dryopithecus → Ramapithecus → Australopithecus → Homo neanderthalensis.
Dryopithecus evolved around 2.5 crore years ago and was more ape-like.
Ramapithecus evolved 1 crore years ago and was more man-like.
Australopithecus evolved around 40 lakh years ago. They had bigger brains than the previous stages.
Homo neanderthalensis evolved around 15 lakh years ago and was considered as the first example of wise man.

Some Of The Ancient Civilization:

  • Sumerian Civilization (4500 B.C. to 1900 B.C.) 
  • Indus Valley Civilization (3300 B.C. to 1300 B.C.) 
  • Ancient and Early Imperial China (2070 B.C. to A.D.220)
  • Ancient Egypt (3100 B.C. to 30 B.C.) 
  • Ancient Greece (1100 B.C. to A.D. 140)
  • Ancient Rome (750 B.C. to A.D. 470) 
  • Ancient Maya Civilization (1000 B.C. to A.D. 1520) 

Flat Earth History
Now, There are Some Groups Of People Who Believes That Earth Is Flat Which Is scientifically Incorrect, and As Per Images Of The Earth We all Can See Of Earth Disapproves This Theory.

History Of Earth Summary
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. Volcanic out gassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.