Pollution caused the environment to become more darkly colored, so moths were selected to be blacks and greys. Before pollution they were white and lighter colors. <span />
Hydrocarbons,polycyclic aromatic hydrocarbons
<span>B. Covalent bonds because the carbon likes to share its electrons with the hydrogen atoms</span>
Redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum
