Approximately how much of earth's surface is covered by water

How did the lab activities you answer the lesson question: what effect does plate movement have on geologic events and structures at earth’s surface? what did you learn from conducting this lab?

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?

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