Why am I here?

3.8 billion years ago

First sparks of life

The air was just a fog of toxic vapours:

Carbon monoxide, carbon dioxide, nitrogen, methene, and cyanide.The planet's surface was dotted with tiny islands in a shallow soup of chemicals.

2.5 billion years ago

 clearing the air

Single-called "cyanobacteria" microbes in the ocean developed the power of "photosynthesis". Later used by plants, this planet transforming process converts sunlight and carbon dioxide into energy,

creating oxygen as a product.oxygen an important breathable gas for the evolution of a greater variety of life-forms began to increase in Earth's atmosphere.

1 billion years ago 

life levels up

The first multicellular life-forms appeared in the oceans. A cell is the basic unit of life; multicelled organisms are made of colonies of cells that specialize in defferent functions.

(Your body is made up of trillions of cells)

   (Cyanobacteria)