[ad_1]
Life on Earth first appeared microscopic, but everything changed 570 million years ago and complex organisms emerged, including animals with flexible structures, such as spongy bodies born in the depths of the ocean.
Scientists have long questioned why organisms appeared in the depths of the ocean under the lack of light and food.
A recent study found that temperature stability is essential for survival as these early models were unable to cope with temperature fluctuations.
Deep water was the only place where the temperature was stable and life was flourishing despite a limited amount of oxygen.
Researchers at Oxford University believe that this could reveal a missing link in the evolution of life and even in the formation of our own species.
They think that this can also shed light on the types of organisms that will survive in different environments in the future.
"You can not have an intelligent life without a complicated life," said Tom Boag, senior author of the study and PhD candidate in geoscience at the School of Earth Sciences, the University of Ottawa. energy and environment of Stanford University.
Previously, scientists thought that animals had the optimum temperature to develop the least amount of oxygen possible.
According to the theory, oxygen requirements are higher in cold weather or warmer than average.
Scientists have tested this theory by examining the needs of oxygen anemones.
The researchers found that their ability to breathe through the skin mimics the biology of fossils collected from marine organisms of the Adyakari era.
"We assumed that her ability to tolerate oxygen depletion would increase as temperatures rise," Boag said, "It has been observed in more complex animals such as fish and lobsters."
As expected, scientists have found that life in the Adyakari era, just like anemones, also requires stable temperatures to allow more efficient use of the limited oxygen resources of the ocean.
In a world where oxygen levels are low, animals unable to regulate their body temperature can not withstand an environment regularly exposed to temperature changes.
");
//}, 3000);
}
});
//$(window).bind('scroll & # 39;);
$ (window) .scroll (function () {
if (alreadyLoaded_facebookConnect == false) {
alreadyLoaded_facebookConnect = true;
// $ (window) .unbind (& # 39; scroll & # 39;);
// console.log ("loaded scroll");
(function (d, s, id) {
var js, fjs = d.getElementsByTagName (s)[0];
if (d.getElementById (id)) return;
js = d.createElement (s); js.id = id;
js.async = true;
js._https = true;
js.src = "http://connect.facebook.net/en_US/all.js#xfbml=1&appId=148379388602322";
fjs.parentNode.insertBefore (js, fjs);
} (document, 'script', 'facebook-jssdk'));
// pre_loader ();
// $ (window) .unbind (& # 39; mousemove & # 39;);
// setTimeout (function () {
// $ (# boxTwitter & # 39;) .html ("Tweets by @tayyar_org");
//}, 3000);
var scriptTag = document.createElement ("script");
scriptTag.type = "text / javascript"
scriptTag.src = "http://www.tayyar.org/scripts/social.js";
scriptTag.async = true;
document.getElementsByTagName ("head")[0].appendChild (scriptTag);
(function () {
$ .getScript ("http://www.tayyar.org/scripts/social.js", function () {});
});
}
});
//$(window).load(function () {
// setTimeout (function () {
// // add the returned content to a newly created script tag
// var se = document.createElement (& # 39; script & # 39;);
// se.type = "text / javascript";
// //se.async = true;
// se.text = "setTimeout (function () {pre_loader ();}, 5000);";
// document.getElementsByTagName (& # 39; body & # 39;)[0].appendChild (se);
//}, 5000);
//});
[ad_2]
Source link
