<span>Our biosphere is the global sum of all ecosystems. It can also be called the zone of life on Earth, a closed (apart from solar and cosmic radiation) and self-regulating system. Geology studies the Earth, and has tendrils in all ecosystems, thus the connection to the biosphere.</span>
I found this article that I think could help you. (https://www.news-medical.net/life-sciences/DNA-Polymerase-Function.aspx) This is the link.