Which statement best explains why this extrusive volcanic rock dies bit. gave visible crystals?

What is an example of a scientific question that galileo could not have answered with out this new tool?

The effect of a hormone on a target cell may be decreased by the presence of

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?