Answer:
Magnetosphere
Step-by-step explanation:
The magnetosphere is the region of space surrounding the earth where the dominant magnetic field is the magnetic field of the earth rather than the magnetic field of the interplanetary space. The magnetosphere is formed by the interaction of the solar wind with the earth's magnetic field. Life on the earth is dependent on the protection of this magnetic field. The magnetosphere shields earth from solar and cosmic particle radiation as well as the erosion of the atmosphere by the solar wind, and the constant flow of charged particles streaming off the sun.