Explain how the percentages of nitrogen, oxygen and carbon dioxide in the Earth’s atmosphere today have changed from the Earth’s early atmosphere.

The early atmosphere was mainly carbon dioxide and water vapour. Water vapour condensed to form the oceans. Photosynthesis caused the amount of carbon dioxide to decrease and oxygen to increase.

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abhishekprakash2625 abhishekprakash2625 · Answer 2 · 2021-11-16T20:33:24+01:00

Earth has its own atmosphere which is made up of various gaseous such as carbon dioxide, water vapour, oxygen and etc

There are various activities that change the composition of the earth atmosphere.

Deforestation

Excessive use of fossils fuel
Emission of carbon dioxide

The earth atmosphere has 78 per cent nitrogen, 21 per cent oxygen, 0.9 per cent argon, and 0.1 per cent other gases.

During the activities perform as mentioned the composition of the earth is changed and the amount of carbon dioxide is increased by 0.01 %.

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