How does spectroscopy provide evidence for the big bang theory?
A: The red shift shows that galaxies are moving away from each other.

B. The intensities of peaks show that galaxies are moving toward each other.

C. The intensities of peaks show that galaxies are moving away from each other.

D. The red shift shows that galaxies are moving toward each other.

It is A: The redshift shows that galaxies are moving away from each other.

Explanation:

The motion of stellar objects can be determined by looking at their spectrum. Because of the Doppler effect, objects moving towards us are blueshifted, and objects moving away are redshifted. The wavelength of redshifted light is longer, appearing redder than the source. Conversely, the wavelength of blueshifted light is shorter, appearing bluer than the source light.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]