Question

How did Earth’s atmosphere change during Precambrian time?

Answer 1

PRECAMBRIAN TIME COVERS the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emergence of complex, multicelled life-forms almost four billion years later.

What Was Happening on Earth at This Time

The Precambrian is the earliest of the geologic ages, which are marked by different layers of sedimentary rock. Laid down over millions of years, these rock layers contain a permanent record of the Earth's past, including the fossilized remains of plants and animals buried when the sediments were formed.
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Answer 2

The Precambrian time is associated with the change in the Earth's atmosphere.

Explanation:

• Around three billion years ago, the atmosphere of earth during the Precambrian time was virtually devoid of oxygen.
• The oxygen was produced as the byproduct of the photosynthetic activities of the cyanobacteria.
• The level of the gas raised and reached upto one percent about 2 billion years ago.
• The earth started to cool which once had hot and humid environment. The molten lava solidified into the solid crust form. The water in the atmosphere condensed to create the oceans.

Learn more about precambrian time:

How long did the precambrian era last?: https://brainly.in/question/9195385

Write Notes on World Precambrian History.: https://brainly.in/question/8931320