I would answer this but i have to go to bed i have a reading test tommorow
7.20 it the energy because
10\7.26 is 7.20
- 70
26
-20
6
Consequences of oxygenation. Eventually, oxygen started to accumulate in the atmosphere, with two major consequences. Oxygen likely oxidized atmospheric methane (a strong greenhouse gas) to carbon dioxide (a weaker one) and water.