In creating a model of our living planet, scientists need to consider four major earth systems. briefly describe these four systems, and then explain why it is difficult to study these systems individually.

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

b is the correct answer

layer 3 is younger than layer 6.