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SIZIF [17.4K]
2 years ago
7

Please help, thank you in advance

Geography
1 answer:
prisoha [69]2 years ago
6 0
1. billions
2. nebula
3.
4.
5. hydrogen
6. betelgeuse
7. supergiant

i’m not 100% sure about 3 and 4 but thermonuclear fusion is when stars fuse together and therefore i would say they expand. hope this helps anyway.
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