It changes, because sunspots are not permanent and can come and go on a cycle.
Sun spots are not permanent, therefore it depends.
The amount of sun spots may vary over time, like in one year there would be 7 sun spots and then 20 the next year.
It depends on the year because there is an influx in sunspots every 10-12 years.
Yes, there are. They are known to be the coolest spot on the sun at about 8,000 degrees farenheight