Why are we're eyes different colors.

Explanation:

This is because our iris is made out of 2 components, the exterior one contains varying amounts of melanin which gives the different eye colours.

Extra: (The interior one contains a fixed high amount of melanin so that light can only enter the eye through the pupil and the light entering can be controlled via pupil accomodation reflex.)

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.