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This tale of rising continents may be overly simplistic, said Laurent Montési, a geodynamicist at the University of Maryland in College Park. Other factors such as the mass of the continents, the amount of water in the oceans and the rate of new crust formation on the seafloor could affect sea levels relative to the continents. The idea is worth considering, he said, “but the evidence is not completely there yet.” The new land would have altered carbon and nutrient cycles, Lee suggested. These effects could help explain large shifts in Earth’s climate around this time and might have nourished the Cambrian explosion. During that time, around 540 million to 500 million years ago, forerunners of the major groups of animals — from insects to mammals — first emerged. Mon, 19 Dec 2016 22:05:31 +0000 https://www.sciencenew...behinds-way-we-look-faces Wild Things Animals, Evolution Editor’s note: This story was updated December 21, 2016, to clarify the description of life that emerged during the Cambrian explosion. cheap retro jordans cheap wholesale jordans cheap jordans cheap air jordans http://cheapjordansstock.com cheap jordans for sale cheap jordans online cheap Authentic jordans http://www.b3nson.net/vanilla/activity http://users.atw.hu/sj...rum_topic&topic=38890 http://koch.cucs.udg.m.../registro#comment-1804314 |