In this project we made a timeline of Earth's history on 10 meter paper. Some major events that happened in Earths history include: the birth of Earth, the first mammals, and the triassic extinction. 4.5 billion years ago, the planet that we live on was first a ball of dust and rock particles and there was attraction called gravity in which then the moon would have formed around that time of gravitational pull. About 4.2 billion years later, was when Earth had the first mammals. These mammals were spreading all around and they were rodent like creatures who were nocturnal. Though 20 million years later, there was a mass extinction that killed around 80% of the animals living and this extinction was called the Triassic extinction. This mass extinction made the large dinosaurs lead the world, they were the most dominant land animals. Earth's history definitely had many ups and downs but most of all it created life. I think of Earth's history as a scarf that is being knit. Why I say that is because there are a few little mistakes and then some big ones but it still continues in an organized order. The mass extinctions definitely surprised me when learning about the history of Earth. Humans caused the most impact on other species and plants leading them to extinction due to the necessities that we need. This is a little bit worry some because it still continues in different parts of the Earth presently.
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