The color red has the longest wavelengths of any color. according to the , that which has longer wavelengths is .

The Doppler effect refers to the modification in wavelength or frequency of a wave in association with an observer who is moving in comparison to the source of the wave.  

The color red exhibits the longest wavelengths of any color. According to the Doppler's effect, that which has longer wavelengths moves away from the Earth, while which exhibits shorter wavelengths move towards the Earth.  

Hence, the given blanks can be filled with Doppler's effect and moving away.  

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

it is called the mitotic spindle