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Theory On Origin Of Animals Challenged: Animals Needs Only Extremely Little Oxygen
Credit: Daniel Mills/SDU
However new studies of a common sea sponge from Kerteminde Fjord in Denmark shows that this explanation needs to be reconsidered. The sponge studies show 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”, says Daniel Mills, PhD at the Nordic Center for Earth Evolution at the University of Southern Denmark.
Together with Lewis M. Ward from the California Institute of Technology he is the lead author of a research paper about the work in the journal PNAS.
A little over half a billion years ago, the first forms of complex life – animals – evolved on Earth. Billions of years before that life had only consisted of simple single-celled life forms. The emergence of animals coincided with a significant rise in atmospheric oxygen, and therefore it seemed obvious to link the two events and conclude that the increased oxygen levels had led to the evolution of animals.
“But nobody has ever tested how much oxygen animals need – at least not to my knowledge. Therefore we decided to find out”, says Daniel Mills.
Credit: Daniel Mills/SDU
The living animals that most closely resemble the first animals on Earth are sea sponges. The species Halichondria panicea lives only a few meters from the University of Southern Denmark’s Marine Biological Research Centre in Kerteminde, and it was here that Daniel Mills fished out individuals for his research.
“When we placed the sponges in our lab, they continued to breathe and grow even when the oxygen levels reached 0.5 per cent of present day atmospheric levels”, says Daniel Mills.
This is lower than the oxygen levels we thought were necessary for animal life.
The big question now is: If low oxygen levels did not prevent animals from evolving – then what did? Why did life consist of only primitive single-celled bacteria and amoebae for billions of years before everything suddenly exploded and complex life arose?
“There must have been other ecological and evolutionary mechanisms at play. Maybe life remained microbial for so long because it took a while to develop the biological machinery required to construct an animal. Perhaps the ancient Earth lacked animals because complex, many-celled bodies are simply hard to evolve”, says Daniel Mills.
His colleagues from the Nordic Center for Earth Evolution have previously shown that oxygen levels have actually risen dramatically at least one time before complex life evolved. Although plenty of oxygen thus became available it did not lead to the development of complex life. Read more about this work here:http://sdu.dk/en/Om_SDU/Fakulteterne/Naturvidenskab/Nyheder_2013/2013_10_16_oxygenfossil.
Contacts and sources:
Birgitte Svennevig
University of Southern Denmark
Source: http://www.ineffableisland.com/2014/02/theory-on-origin-of-animals-challenged.html
Obviously, if you are willing to limit yourself only to animals that don’t move, you don’t need much oxygen. But if you expect your animals to move around for food or hunt, you’re going to need oxygen and closer to modern-day levels to help generate the energy necessary for that kind of activity.
Some of the “reporters” at BIN appear to be severely oxygen-starved.
I cannot understand how people that say they believe in evolution as proposed by darwin as a joke, similarly the feminists advocates of old,such as germain greer, can actually read and write. the latter takes intelligence the former is devoid of even the smallest molecule of the same.
If animals need little oxygen then I understand now why obama barely breaths while talking.
Actually, through planet history, we have PRIMARILY been a high-oxygen atmosphere world. Oxygen, with rates up to 34-percent, have been proven in the paleolithic era. It is also believed that animal size is directly related to oxygen content of the atmosphere, and simple testing has proven this in lower animal forms. (also why dinosaurs were believed to have been so large)
Oxygen was a ‘runaway gas’ when phytoplankton had no predator in the earliest seas. This occurred around
hmm… 635-million years ago. Imagine that, right when you say we had ‘little oxygen’, paleolithic era records show we had an over-saturation event of it.
Might need to go back and check that record again.
By the way, oxygen contents for humans of 22-25 percent, though lethal if spontaneously introduced to it (slow increase would be required -possibly over multiple generations), combined with higher protein amounts for daily diet SHOULD render giants of immense knowledge.
Now you see why they chemtrail humans and demand veganism from us all – the idiot politicians and world leaders don’t want a bunch of Nephalim running around contradicting them.