By this I assume you mean why you can find pieces of undigested food in feces. Going with this assumption, the reason you find such pieces is because they are indigestible. Bits that are often found in feces include vegetable/fruit skins, seeds, bones, and perhaps even a small coin! Skins often contain a high amount of fiber, which humans cannot digest, and therefore simply pass it out. Seeds are already tough to chew in many cases, and often remain undigested as well. Humans can also not digest bones, and it is not recommended that you eat them because they can puncture the intestine.
Perhaps you mean "undigested" food? Undigested means it wasn't in there very long or it's something thaty doesn't digest well (corn kernels, for example.) With little kids (still indiapers, so you KNOW what the poop looks like) this is fairly common. And many times food coloring isn't well digested, producing fun rainbow shades in the diapers.
Food that contains undigestible components, for example bran or cellulose containing substances e.g. leaves.
Undigested food, toxins bacteria
Water; fluids
it is the large intestine
The large intestine
Undigested food, mucus dead body tissues and toxins
Yes any undigested food stuff is passed out of the body
Faeces is made from undigested waste food in your body, mucus and toxins
Undigested food, toxins bacteria and mucus passed to the colon out of the body
Feces are the waste products that the body was unable to digest. It is undigested food, fiber. the digestive juices, and water.
Feces or fecal matter is undigested animal waste. All mammals produce feces from the food they eat. Feces is what is left over after the digestive process that the body couldn't use.
Because it contains undigested food, mucus, dead body tissue and toxins
Defecation or elimination is the process of removing undigested food (feces) from the body.