-
The Earth is formed out of debris around the solar protoplanetary disk. There is no life. Temperatures are extremely hot, with frequent volcanic activity and hellish environments. The atmosphere is nebular. Possible early oceans or bodies of liquid water. The moon is formed around this time, probably due to a protoplanet's collision into Earth.
-
Atmosphere consisted of gases like: methane, ammonia, carbon dioxide and water vapor. Scientists thought that lighting was producing chemical reactions in the atmosphere.
-
The pillow-like rock formations are formed as a byoproduct of microbial life. During the formation of stromatolites, sheets of microbes, such as cyanobacteria, capture sedimentary particles. Successive layers of microbes and sedimentt results in the striated pattern of growth.
-
As we said earlier, stromatolites have microbial life. Thanks to them, now we can breathe because they bring us oxygen to our air.
-
Eukaryotes, a more complex form of life, emerge in our planet, including some forms of multicellular organisms. Bacteria begin producing oxygen, shaping the third and current of Earth's atmospheres.
-
It appear the first species of invertebrates, that do not have backbones. They are multicellular (the cells are working together for the survival of the organism. All of the cells have specific duties and responsibilities). They take part of the Kingdom Animalia.
-
Now that we have invertebrates, vertebrates appear in the Earth. But, the differences between these two groups are that: vertebrates have backbones and they are more than the invertebrates.
-
A new species of animals appeared on Earth and they are attracted to plants. They use to live in lands, eat plants and they are terrestrial. They use to be mammals.
-
This vertebrates group of animals, amphibians, use to live near to lakes. They seem to be stronger than the other groups of animals because they developed limbs. Reptiles, as a difference, they didn't developed limbs, but they are quite similar.
-
Wow! Now we have dinosaurs in our Planet. They are enourmous and they are very scary. We have a lot of different types of dinosaurs: carnivores, herbivores, omnivores, flying dinosaurs, land dinosaurs, ...
-
An asteroid falls on the Earth and kill all the dinosaurs that exist in the world. The Earth it's totally destroyed and caotic.
-
Now we have monkeys, chimpanzees and gorillas. Does that mean that the can evolve to a new species that can form us?
-
Australopitecus appeared and, during an evolution, we humans appeared to the world.
