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ollegr [7]
3 years ago
10

I need to know if the answer is a, b, c, or d

Biology
1 answer:
lions [1.4K]3 years ago
6 0
The answer is D because the layers all the way at the bottom had to be there for other layers to be built on top
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Which of the following processes begins when a star enters the main sequence?
Katena32 [7]

Hello there Jonnromeroo, thank you for asking a question here on Brainly!

You Asked ➤ Which of the following processes begins when a star enters the main sequence?

↴ OUR CHOICES ↴

A: Nuclear fission

B: Nuclear fusion

C: Condensation of a nebula

D: Appearance of a supernova

------------------------------------------------------------------------------------

Answer ➤ B: Nuclear fusion

Explanation: When a star begins the process of being created, it is hot and dense. Really hot and dense! It begins to start fusing with helium which is the start of its main sequence called nuclear fusion.

I hope this answer is helpful to you, but please let me know if you have any other questions regarding it.  

<em>- Qamar  </em>

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3 years ago
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