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The universe began about 14 billion years ago and has been expanding and cooling ever since. What does this statement most completely describe? the Doppler effect the big bang theory cosmic background
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The universe began about 14 billion years ago and has been expanding and cooling ever since. What does this statement most completely describe?

the Doppler effect
the big bang theory
cosmic background radiation
light years

User Speg
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Answer:

its the big bang theory

Step-by-step explanation:

User Glech
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4 votes

Answer:

the big bang theory

Step-by-step explanation:

User Yurnom
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