A person’s ecological footprint is the land that a person lives on. the land required to produce a person’s food. the amount of carbon dioxide a person contributes to climate change. the land needed to support all of a person’s activities.

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?