food comes out of your butt
The food you eat
The body does not produce iron, it only absorbes it from food.
They come from your food. You get them by digesting proteins.
The food you eat.
undigested food
Food.
Digesting. It's the closest answer!
No, dead body is food to certain aerobic worms.
it comes from the food you eat and the water you drink
its aids us in respiration because it helps the food come out of our body
it depends on whether your starving or not. if not, it comes from food (measured in calories). otherwise, your body's' energy will come from stored fat, stored glucose (often in the liver) and lean body tissue (muscle).
No, if that were true you wouldn't grow. The bulk of it "passes", but a lot is used by the body.