Describe the possible events in chemical evolution starting with the origin of our planet and leading...

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Biology

Describe the possible events in chemical evolution starting withthe origin of our planet and leading up to the origin of livingsystems. Describe how the environment on Earth evolved from itsbeginnings and through time (you may consider describing theatmosphere and the landscape of the early Earth). Be sure toinclude the evidence supporting the possible sequence of keyevents. Include the relative geological time frame for theseevents.

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Earth was formed 46 billion years ago from the same nebula cloud of gas and dust that formed the Sun and other planets Earth back then was very different from Earth now and it would have been impossible for life to exist on it The Earth is still changing even today It has a molten layer which causes volcanoes to occasionally erupt and the crust of the planet is constantly moving sliding over under and sideways against itself With erupting volcanoes and a constantly moving crust the Earth is changing even today This is our solar system in one of the arms of the Milky Way galaxy When the universe began around 10 billion years ago Earth wasnt around Neither was our solar system Our solar system the Milky Way was formed in a perfectly ordinary place in the universe in the normal way Solar systems and the planets within them form from the spinning disks of matter Slowly the grains of matter come together to form clumps then boulders and eventually balls big enough to have their own gravity coalesce At this point these clumped matter are called planetesimals which just means a small irregularshaped body formed by colliding matter Eventually the planetesimals grew larger by colliding and combining with other bodies of matter As the planetesimals grew larger their gravity was greater and they collected even more matter Some of the planetesimals began to orbit the main star our Sun When they do this they are considered to be a planet an astronomical object that orbits a star and does See Answer

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