Answer:
Well,
Explanation:
Roughly 5 billion years from now, the Sun will exhaust the hydrogen fuel in its core and start burning helium, forcing its transition into a red giant star. During this shift, its atmosphere will expand out to somewhere around 1 astronomical unit — the current average Earth-Sun distance.
Its O is the anwser to your problem
Answer:
The standard unit of length in both the SI and original metric systems is the meter (m).
Explanation:
I think thats correct. Hope it helps! :)