This is true
It has happened before and was one of the factors that influenced the current position of the continents. It will surely happen again if one day an ice age happens.
It is already hot, so it makes it more humid
The horizon is always always always always ALWAYS 90˚ above the zenith.
Answer:
No,it is not important that it must be only fire it may be other source also
Roughly 7! 7 x 48 is 336 which is two short so maybe just say 8 to be safe.
