Hello.
There are a couple things needed for natural selection.
Natural selection is organisms become comfortable and changer where they are newly located. Where they can live and get more off springs.
First, You will need <u>heredity</u> which passes traits to an offspring.
Second, <u>reproduction</u> that is needed to to copy traits and give them to the offspring.
Not photosynthetic organism must do to obtain glucose
It is a perfect example of a natural selection.
(I'm not sure if this is the exact answer that you are looking for.)
Answer:
A new field known as <u>nutrigenomics</u> has emerged to explore the epigenetic influences of diet.