The answer is seafloor spreading and subduction.
Hope this ain't too late (this is the PLATO answer)
1) Mapping
2) Tracking
3) Military Purposes
Answer: I think this might help you !!!
Explanation:
<h3>Resources are the products of the physical system but they also depend on human ability and need, not by nature. Human beings evaluate the natural environment and classify those substances that provide value to them. Resources are therefore dynamic cultural conceptions.</h3>
Ejemplos de fuerzas
En la naturaleza, las fuerzas fundamentales son la gravedad, la fuerza nuclear débil, la fuerza nuclear fuerte, la fuerza electromagnética y la fuerza residual. La fuerza fuerte es lo que mantiene unidos protones y neutrones en el núcleo atómico.