Students will use scientific data on streamflow from the Sierra Nevada to analyze snowpack and draw conclusions about the changing climate. Students will be able to predict changes that will occur to the Sierra Nevada snowpack if the climate change continues, and predict the changes that will result on the biosphere due to climate change. Background The Earth consists of four systems: the atmosphere, hydrosphere, geosphere, and biosphere, which are interconnected. Changes to one part of the system can have consequences on the others. Changes to global or regional climate can be caused by chang Duration: 60 Minutes.