Summarize the Case Study from Science on pages 10 and 11 about the Pfennig experiment. In the summary, explain how their experiment illustrates the scientific process.

3 hundred and twenty

Explanation:

The following are the five major spheres of the Earth:  

1. Geosphere: It comprises Earth's mantle, crust, and core, that is, the solid proportion of the Earth.  

2. Biosphere: It comprises all the species on Earth, as well as, the environments in which they thrive.  

3. Atmosphere: It comprises the gases surrounding the Earth.  

4. Cryosphere: It comprises the ice sheets of Earth as well as the environments in which they thrive.  

5. Hydrosphere: It comprises the water in Earth's seas, oceans, glaciers, rivers, lakes, and atmosphere.