Earth is responsible for the increase of oxygen in which development

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.

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.