Earth’s magnetic field shields us from solar wind and helps hold onto atmosphere and water. To what do we owe this invisible protector?
A. The aurora borealis.
B. Plate tectonics.
C. Earth’s circulating liquid metal core.
D. All of the above
Answer:D
Earth’s magnetic field shields us from solar wind and helps hold onto atmosphere and water. To what do we owe this invisible protector?
A. The aurora borealis. B. Plate tectonics. C. Earth’s circulating liquid metal core. D. All of the above