Translation of biosphere in German

All travel agents, but one, were all pritty unreliable as one could perceive immediately. We did not care for a dollar more or less and everybody promised the same which was not convincing.
In addition I felt were uncomfortable with a ten year old girl rowing our boat while we were sitting like stupid tourists there. I offered to row myself and took the girl's rudder. She was happy.
It was a two hour flight above the vast area of Patagonia. On the left side of the flight path there were mostly arid areas, some covered in snow. On the right side of the airplane were the mountains.