Random changes in the gene pool of a small population

gene flow or genetic drift can cause changes   in a population

It's called genetic drift: when changes in the alleles of a population are altered due to chance. For example:

There's a population of red beetles. A couple of the beetles are blue due to a genetic mutation. Suddenly, an elephant steps on the beetles, which, coincidentally, most of which were red. This resulted in more blue beetles than red, and after a few generations, mist other beetles are blue, and only a few are red.

protein makes up the building blocks of organs, muscles, skin, hormones and pretty much everything that matters in your body.

some choices are:

peanut butter

seeds

eggs

yogurt

meats

fish

so pretty much meat, dairy, nuts, and grains.