History of Earth
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Hello Friends, Welcome to another blog. In this blog, I explain the History of Earth. The history of Earth spans billions of years, encompassing a wide array of geological, biological, and environmental events. Here's an overview of Earth's history: 1. Formation: Earth formed around 4.5 billion years ago as a result of accretion within the solar nebula, the rotating disk of gas and dust surrounding the young Sun. 2. Hadean Eon (4.5 - 4 billion years ago): During this period, Earth was bombarded by asteroids and comets, and intense volcanic activity characterized the planet's surface. The atmosphere was mostly composed of carbon dioxide, water vapor, and nitrogen. 3. Archean Eon (4 - 2.5 billion years ago): The early Earth's surface cooled, allowing the formation of the first oceans. Primitive life forms such as bacteria and archaea emerged in these ancient seas. Oxygen began to accumulate in the atmosphere due to photosynthesis by cyanobacteria, leading to the Great ...