Ocean currents are caused by water's density differences. the density differences in the ocean water are due to different salt concentrations and differences in
a) waves.
b) temperature.
c) plate tectonics.
d) volcanic activity.

C is definitely the answer

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the answer is otpion c) understanding

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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