It is Cellulose
Gasoline is the only thing that cannot be poluted
Humans! We cannot say the answer is computers, because humans created the computer.
The human body cannot digest cellulose, a complex carbohydrate found in plant cell walls. While we can break down some forms of fiber, cellulose remains undigested as our digestive enzymes cannot break its bonds.
Nothing. Allah sees everything, humans are Allah's worshipers, and Allah knows everything humans do, so he sees every single thing they see, do, or anything else.
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Immortality: Humans cannot achieve eternal life. Invisibility: Humans cannot become completely invisible. Teleportation: Humans cannot instantly transport themselves from one place to another. Flight without technology: Humans cannot fly without the aid of technology. Walking through solid objects: Humans cannot pass through solid objects like walls or doors.
Human hair cannot be digested by humans, so I would hypothesize that we could not digest cat hair either.
Humans cannot digest hair, rocks, glass, certain fats/oils, certain types of fiber, etc. The fact that some types of fiber cannot be digested is actually a good thing, since they help dilute sugars and clean the colon.
The good thing about the vegetables is that they don't have cholesterol and are easy to digest.
They digest every thing unnecessary.Worn out organells,pathogens are some.
Animals can almost always see and hear things the way humans can. Some of them can also hear and see things that humans cannot. For instance a dogs hearing and a cats sense of sight are much better than a humans are.
Yes, it is. Though some animals such as termites can digest cellulose, we humans can't. Cellulose is the thing that gives plants their structural integrity. Contrary to some other polysaccharides like starch, it is connected through b-bonds. Only certain bacteria can break those bonds to digest the polymer, and humans don't have these bacteria. Another indigestible polysaccharide is Chitin. The shells of crabs and lobsters are made of Chitin, among other things.