Animals can live and grow even with very limited oxygen supplies
Washington: New studies of a small sea sponge fished out of a Danish fjord have shown that complex life does not need high levels of oxygen in order to live and grow.
The origin of complex life is one of science`s greatest mysteries. How could the first small primitive cells evolve into the diversity of advanced life forms that exists on Earth today? The explanation in all textbooks is: Oxygen. Complex life evolved because the atmospheric levels of oxygen began to rise approximately 630 - 635 million years ago.
However new studies of a common sea sponge from Kerteminde Fjord in Denmark showed that animals can live and grow even with very limited oxygen supplies.
In fact animals can live and grow when the atmosphere contains only 0.5 per cent of the oxygen levels in today`s atmosphere.
"Our studies suggest that the origin of animals was not prevented by low oxygen levels," lead author Daniel Mills , PhD at the Nordic Center for Earth Evolution at the University of Southern Denmark, said.
The study was published in the journal PNAS.
More from India
More from World
More from Sports
More from Entertaiment
- Dope test scandal: After wrestler Narsingh Yadav, shot putter Inderjeet Singh tests positive for banned substance
- Historic solar flight marks first round-the-world journey
- Akshay Kumar’s avatar in John Abraham, Varun Dhawan starrer ‘Dishoom’ will surprise you– See pic
- Bangladesh police storm militant hideout, kill 9 Islamist extremists in Dhaka
- Anita Hassanandani, Rohit Reddy’s Maldives trip will give you vacation goals- See Pics