Burrowing animals may have been key to stabilizing Earths oxygen | - TopicsExpress

Burrowing animals may have been key to stabilizing Earths oxygen | #Geology #GeologyPage Around 540 million years ago, the first burrowing animals evolved. When these worms began to mix up the ocean floors sediments (a process known as bioturbation), their activity came to significantly influence the oceans phosphorus cycle and as a result, the amount of oxygen in Earths atmosphere. Our research is an attempt to place the spread of animal life in the context of wider biogeochemical cycles, and we conclude that animal activity had a decreasing impact on the global oxygen reservoir and introduced a stabilizing effect on the .... Read more : geologypage/2014/08/burrowing-animals-may-have-been-key-to.html Geology geologypage

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