what's the life cycle for the star Sirius A and B. (include Pictures) WILL NAME BRAINLIEST!!!

From Sirius B's mass and temperature (25,000 kelvins), the astronomers estimate the star became a white dwarf around 124 million years ago. Thus, the star shone as a main-sequence star and then a red giant for 101 to 126 million years — the expected lifetime of a star born with about 5 solar masses.

a.   it resulted in widespread unemployment.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.