Answer:
no not actually
Explanation: the notheren lights are caused by earths magnetic field what youre thinking of when a star explodes it creates a supernova.
Explanation: Rivalry
There is safety in numbers, and with that, they can run together more often without the fear of being attacked, and must push themselves to match others, therefor getting fit
Answer:
Robert Hooke discovered the microscope I'm not sure about the others