Talking *****

[Flash525]

So how much do people (anyone?) here know about Biology? I was thinking the other day about why we produce ... waste; with the exception of humankind (who often eat foods we don't need, or a variety of mixed foods that otherwise work well together) how (or why) has evolution, as far as the animal kingdom, deemed it necessary that we must all urinate and poop?

Seems a daft question, right? But think about it; surely each and every species on this world would be hard wired to know what it can, and cannot eat - most natural creates know by, I guess, instinct? I doubt many animals (if any) choose to overeat to the point that they become bloated, at least those that haven't been domesticated.

Would an animal not only eat what it needs too in order to survive, and no more? Why then have animals evolved to produce waste? Wouldn't (or shouldn't) they have evolved (along with plant life) to retain a balance to eat only what they need too - and in turn, what they do eat hasn't going anything within it that's deemed necessarily be the feasting digestive system to be determined as waste...

Anyone else understand where I'm [trying] to go with this?

 

[KRYPTON INC.]

Uh... What?

As we are essentially a walking bag of chemical reactions, those reactions produce waste material. You know that the very process of breathing is also producing "waste"? Carbon dioxide. Our skin cells shed as they break down. Waste. Boogers in your nose? A waste product produced as part of your immune system. It's as simple as that. Even on the essential level of the law of conservation of matter and energy, though nothing ever gets destroyed or created there is always left over material and energy that doesn't go through a system. Light a piece of paper on fire and you are releasing the potential energy in the paper in the form of heat but the reaction still leave some behind the ash, which is what happens to the paper when it undergoes the physical/chemical change being combusted causes. Our cells in the mitochondria take the energy of what we consume, say sugar, converts that into atp which then is used to power us on a cellular level. As you can imagine this produces various waste.

This all very basic biology and chemistry.

 

[Flash525]

I didn't think about this as in depth as I should have done. Interesting way the world, us, and the actual universe work. You'd think life would get by without producing waste, although to some degree one things waste is another things gain (trees rely on carbon dioxide for example) - and dung beetles..