Animals have a variety of adaptations, including trachea and gills, which allow this key process to occur. Which provides the molecules necessary for cellular respiration and efficient ATP synthesis

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.