list the five Major events during geological time period beginning from origin of life you begin with the origin of animal
Answers
Answer:
I am beginning from origin of life forms in earth. If you want to take after that then start from the 2nd event.
1st Event: 3.5 Billion years ago: First unicellular life evolved in the form of photosynthetic bacteria which produced oxygen in the atmosphere.
2nd Event: 500 Million years ago: Evolution of fish like vertebrates occurred in the water bodies.
3rd Event: 450 Million years ago: First living organism moved into land from water. They were arthropods which further evolved to form species like spider, scorpions, etc.
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Answer:
4600 mya (million years ago) – Planet Earth formed.
4500 mya – Earth’s core and crust formed.
4400 mya – The Earth’s first oceans formed.
3850 mya – The first life appeared on Earth.
1500 mya – Oxygen began to accumulate in the Earth’s atmosphere.
700 mya – The first animals evolved.
530 mya – The first vertebrates (fish) evolved.
350 mya – The first land vertebrates evolved.
225 mya – The first dinosaurs evolved from lizards.
65 mya – The dinosaurs went extinct.
130,000 years ago (0.13 mya) – Modern humans evolved.
Explanation: