24. the event that released oxygen in earths early atmosphere happened around ____ years ago. 2 billion; 4.6…

24. the event that released oxygen in earths early atmosphere happened around ____ years ago. 2 billion; 4.6 billion; 3.2 billion; 10 billion

24. the event that released oxygen in earths early atmosphere happened around ____ years ago. 2 billion; 4.6 billion; 3.2 billion; 10 billion

Answer

Brief Explanations:

The Great Oxygenation Event, which released oxygen into Earth's early atmosphere, occurred around 2.4 - 2.3 billion years ago, with some evidence suggesting photosynthesis - based oxygen production started around 3.2 billion years ago. The closest option to these scientific estimates is 3.2 billion years ago.

Answer:

3.2 billion