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Blast from the past- Oxygen Catastrophe, Do you know? |
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by Asmita Gaire | 12-02-2019 00:51
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The Oxygen Catastrophe was the appearance of dioxygen in the atmosphere at around 2.3bya. This caused the mass extinction of anaerobic monerans because the dioxygen is toxic to anaerobic prokaryotes. The oxygen in the air reacted with large amounts of methane and greatly cooled down the atmosphere of Earth. Glaciation occurred and possibly caused a snowball Earth, or an Earth that was almost completely covered in ice. Since the Great Oxygen Catastrophe, life on Earth would not be possible without dioxygen. The first mass extinction on earth occurred around 2.5 billion years ago, when a photosynthesizing bacterium appeared and released so much oxygen into the atmosphere that anaerobic life was largely wiped out. This is often called the Great Oxygenation Event, the Oxygen Catastrophe, or the Oxygen Holocaust. |
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12 Comments
Greeting basanta
I hope you are doing well
Thank you so much for this compliments
Regards
Asmita
Posted 03-04-2020 00:03
Greeting ishma
I hope you are doing well
Thank you so much for this compliments
Regards
Asmita
Posted 03-04-2020 00:03
Greetings hema
I hope you are doing well
Thank you so much for this compliments
Regards
Asmita
Posted 03-04-2020 00:02
Greetings susmita
I hope you are doing well
Thank you so much for this compliments
Regards
Asmita
Posted 03-04-2020 00:02
Greetings asmita
I hope you are doing well
This is a nice article
Thank you so much for this report.
Keep writing
Green cheers!
Regards
Hema
Posted 18-03-2020 11:11
Greetings asmita
I hope you are doing well
Thank you so much for this great report
I hope to read more from you!
Green cheers
Regards
Ishma
Posted 17-03-2020 12:07
Greetings asmita
I hope you are doing well
Thank you so much for this great report
I hope to read more from you!
Green cheers
Regards
Ishma
Posted 17-03-2020 12:06
Greetings asmita
I hope you are doing well
Thank you so much for this report.
I hope to read more from you.
Keep up with great works
Green cheers
Regards
Basanta
Posted 16-03-2020 10:18
Greetings asmita
I hope you are doing well
Thank you so much for this report
Keep writing
Waiting for your next report
Thank you
Green cheers
Regards
Susmita
Posted 13-03-2020 11:53
Greetings asmita
I hope you are doing well
Thank you so much for this report
Keep writing
Waiting for your next report
Thank you
Green cheers
Regards
Susmita
Posted 13-03-2020 11:53
Hello faith,
I was also unknown about the fact back few weeks. It??s interesting going deeper. And it??s in our hand to prevent earth from every catastrophe now.
Posted 13-02-2019 14:23
I did not know about the Great Oxygen Catastrophe and it sounds like a very interesting phenomena. I am definitely going to look more into it. Thanks for sharing!
Posted 13-02-2019 00:03