What will happen to Earth when the Sun becomes a red giant? at will no longer be gravitationally tied to the sun
clobal warming will occur
or engulfed by the outer layers
of the sun

the whole world will blow up and come to an end

Explanation:

What will happen to Earth when the Sun becomes a red giant?

at will no longer be gravitationally tied to the sun

global warming will occur

or engulfed by the outer layers

of the sun

i'm sure the answer you are looking for would be

a. an ice age

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