Biosphere is the living organisms, geosphere is the Earth itself.
Explanation:
The biosphere includes all living organisms including plants and animals. The geosphere is the earth itself, the geosphere includes the rocks and minerals of the Earth, it starts at the ground and extends all the way to the Earth's core.
I would clarify to her that it is her decision, and hers alone. If she is truly worried she might fall as a victim to the disease and has the money to afford the testing that she should most definitely go through with the testing
The philosophically approach to the art and not just the physical, where we have to be in the experience instead of trying to hold on to the experience.