These processes are connected along the magnetic field to the Earth's ionosphere, where they lead to the aurora, heating, modification of composition, and large-scale plasma motions. All of these ionospheric processes are interesting in their own right.
The phenomena under discussion are connected via the Earth's magnetic field to its ionosphere, ultimately leading to the spectacular display of the aurora, as well as heating, changes in composition, and extensive plasma movements. Each of these ionospheric processes is worthy of attention independently.