Which best describes clara's error? a) during redshift, the light source and observer move closer together, not farther apart b) the cmb is blue-shifted, not red-shifted, to the microwave region. c) the temperature of hte cmb is cooler, not hotter, than at the time of the big bang. d) the redshift indicates approaching, not receding, galaxies.

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.