Chemistry GCSE

Stability over geological time

What Stability over geological time means in Chemistry GCSE, as defined for AQA.

Definition of Stability over geological time

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Reference: AQA

The atmosphere has had much the same proportions of gases for about 200 million years, meaning they have not changed significantly over that period.

AQA · The proportions of different gases in the atmosphere (study guide)

Topics that use Stability over geological time

The proportions of different gases in the atmosphere (AQA GCSE)

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