What is the definition of
Filtration, Reabsorption, secretion and excretion?

Excretion is the removal of waste products made in the cells during metabolism from the body.

Filtration is the process in which fluid and small molecules pass into the Bowman's capsule

Reabsorption is when water, ions and nutrients are transferred back into the interstitial fluid via both active and passive transport

Secretion is the removal of waste products from the blood and interstitial fluid.

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.