What is selective breeding, also called artificial selection? When humans allow all organisms to breed
randomly.

When humans select specific traits and only
breed those individuals.

When females select which male to
reproduce with

When males select which female to
reproduce with

sex cells are usually half's then they find another half and make a fertilize egg

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.

(nitrogen fixation) will be your answer sorry if im wrong