Answer:
The Earth's magnetic field is believed to be generated by electric currents in the conductive iron alloys of its core, created by convection currents due to heat escaping from the core.
Answer: I think its 100,000 years it would be 1 billion at 1800s
Answer: wind
Explanation: just think about it if we use nuclear power we are gonna kill things so if we use more wind power we can be safe thats just my opinon
