A new study is not even with a long-held outlook that the people of large-scale animals were already occupy Africa.

In the study published in the journal Science on Friday, writer studies on megaherbivore communities in East Africa over seven million years. A megaherbivore is a mammal of more than 2,000 pounds. They conclude that the outcomes of various societal communities in Africa were preceded by human pursuit.

The animal distribution may instead be due to environmental factors such as the interchange of atmospheric carbon dioxide and expansion of grassland, writes researchers.

"Low CO2 levels contain tropical grass on trees, and as a result, savannas have become less severe and more open by the time," said John Rowan, a postdoctoral scientist from the University of Massachusetts Amherst, & # 39; t was involved in the study, said in a statement. "We know that many of the extinct extinct megaherbivores on hard vegetation, so it seems to be found beside their herb."

Retrieved from "http://en.wikipedia.org/w/index.php?title=Tyler_Frieden&oldid=6498" Categories: American person of 'American literature' Utah University Utah From Wikipedia, the free encyclopedia Jump to: navigation, search Wiki letter w.svg This article has a stubborn geography. Today, only elephants, hippopotamo, giraffes and white and black rhinoceroses exist.

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University of Oxford, U.K., researchers made it not just clear when people began to have large animal populations, but there is strong evidence that human influence played a role in losing tens of thousands of years ago.

"The causes of megherbivore degeneration are probably complex, multidimensional, and varied over time and space," writes René Bobe and Susana Carvalho in the same issue of Science.

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