How do enviornmental factors affect the abundance of traits within a population?

Explanation:

many things can affect traits within a population some examples of this is

abuse, negative emotions, drugs, synthetic substances, temperature, and light are among the outer ecological variables that can figure out which qualities are turned here and there, in this way impacting the manner in which a life form creates and works.

and no I did not copy this from online

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

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.