10 Most Important Events in History

Big image

The Creation of Earth - 4.6 bilion years ago

The earth was created by the accretion of remnants from a nebular collapse.
Big image

Life - 4.4 billion years ago

The origin of of life was one of the most important events in the history of the Earth as it would literally change the face of the Earth.
Big image

Photosynthesis - 3.4 billion years ago

Photosynthesis allowed plants convert sunlight and Co2 into energy a process which released oxygen as a byproduct causing oxidation.
Big image

Oxidation - 2.4 billion years ago

Photosynthesis flooded the atmosphere with oxygen and purged it of Co2 stifling the greenhouse effect.
Big image

Snowball Earth - 650 million years ago

The slow down of the green house effect caused by oxidation caused the temperature on Earth to plummet to an average of -50°C.
Big image

Cambrian Explosion - 530 million years ago

The Cambrian Explosion was rapid increase in the number and diversity of species on Earth.
Big image

Pangea - 260 million years ago

Pangea was the super continent from which the current continents originate.
Big image

The Great Dying - 250 million years ago

The the Great Dying was the most devastating extinction in the history of the Earth killing 96% of all species on Earth. It was caused by volcanic eruptions and their effects on the climate.
Big image

Mesozoic Extinction - 65 million years ago

The Mesozoic extinction was caused by the impact of an asteroid 10km in diameter. The impact killed the dinosaurs ending the age of the reptiles and paving the way for the age of the mammals.
Big image
Big image

Humans - 4 million years ago

Humans have affected the planet more than any other species in the history of Earth