Explain why the temperature of the cosmic background radiation is 2.725 K, and how this temperature evolves over time.
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![b) Explain why the temperature of the cosmic background radiation is 2.725 K, and how this
temperature evolves over time.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2029e9ff-92ae-4d39-b219-1e9508720477%2F1b81a9bb-f5dd-450a-8b16-3b0a3775671f%2Fiaowcv_processed.jpeg&w=3840&q=75)
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