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What are the sun's evolutionary stages?

Answer 1

Sun stars it life from a huge cloud of gas hydrogen and dust called nebula.

Due to gravity more mass of gases are accumulated in one place it become a proto star.and when it reaches huge size temperature and pressure inside increases.
When temperature is about 15 million deg c nuclear fusion starts and a star is formed. increases stage is called main sequence,Sun continues in this state for about 10 billion years. When whole hydrogen and helium is finished star become red giant.outer layers are puffed out.At the center the core become a white dwarf.

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Answer 2

Anna Armstrong

Asymptotic Giant Branch, Planetary Nebula, White Dwarf, Red Giant, Main Sequence, Protostar, Helium Fusion, Horizontal Branch, and Asymptotic Giant Branch

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.