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vichka [17]
3 years ago
13

The universe began about 14 billion years ago and has been expanding and cooling ever since. What does this statement most compl

etely describe?
the Doppler effect
the big bang theory
cosmic background radiation
light years
Biology
2 answers:
Vitek1552 [10]3 years ago
8 0

Answer:

its the big bang theory

Explanation:

sergiy2304 [10]3 years ago
7 0

Answer:

the big bang theory

Explanation:

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