If living things keep on dying due to lack of water from the past millions of years then why don't they evolve such that they don't need water anymore.
2006-06-20 11:11:11 · 14 answers · asked by Capt. Jack Sparrow 2 in Science & Mathematics ➔ Biology
I think it's possible there are forms of life that are evolving so that they don't need water.
A few millions of years ago, earth was contaminated with a new deadly poison. It's called Oxygen. It killed most of life on earth and new life forms evolved that actually us that poison and are dependent on it for lie. Maybe the same thing can happen with water.
2006-06-20 11:16:48 · answer #1 · answered by brand_new_monkey 6 · 0⤊ 0⤋
Basically every chemical reaction in our body depends on water.
The very first organisms (these organisms would be similar to a virus, and they contain only DNA and maybe some kind of protein coating) lived and reproduced in water. When chemicals such as DNA are submerged in water, they take on a state as we know it (such as a double helix). When the DNA is dried up it becomes a tangled mess. Thus, not only would you need your DNA to actually change in make up, but you would need you DNA to have millions of mutations to accomodate for the all the other changes you body would need to make (like cooling down with out sweat, salivating, blood flow, etc.)
But your DNA couldn't change in make up because you DNA is made from a strand of your parents' DNA. And if somehow you did evolve new anti-water DNA substitute, You would need to digest the new DNA substitute, and no other animal would have that DNA anti-water substitute, so you would die before you reached the state of an embryo.
Basically, we have always had access to water, and depend on it so you couldn't possibly evolve to not have it.
2006-06-20 18:40:30 · answer #2 · answered by Giraffe 2 · 0⤊ 0⤋
water is necessary. the animal just cant evolve the ability to live without water. in order for evolution to occur, there has to be a gene in a member of a species that lives.
this is what i mean. Organisms A, B, C, and D have a gene that allows them to live without water. it is an advantageous mutation. Organisms E through Z do not have this gene. now a devastating drought plagues the land, and everything starts dying. A, B, C, and D can survive because they do not need water. everything else dies because they need the water. A, B, C, and D continue to reproduce and spread the gene, causing their species to become something different. that is evolution.
however, that would never happen, because water is one of the must have ingredients for life (as we know it)
2006-06-20 18:25:10 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Because water was here with us mostly. A few peole in a few places couldn't get water and died. Most had water right along for the past 3 million years or so of humans. Humans tend to choose places that have water as good places to live.
2006-06-20 18:16:08 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Obvious its obvious why we need water? Cuse the only thing you body needs the most is water. Its like when you thirsty your cells are low in oxygen and they need water. For example if you are hungry you can go on for a while without eating so without water is harder. So there you have it we canno evolve into something that we cannot. Like asking why cant we live forever?
2006-06-20 20:28:34 · answer #5 · answered by Slick Man's Finest 2 · 0⤊ 0⤋
All living things are mostly water. Every cell in your body is essentially a bag of water with impurities (the impurities being the chemical constituents of life). All biological reactions must occur in water, or they won't work. DNA itself bonds into the double helix because the interior of the molecule is hydrophobic and the exterior is hydrophylic, consequently the very basis of life as we know it wouldn't work without water.
2006-06-20 19:54:52 · answer #6 · answered by rkbrown142 1 · 0⤊ 0⤋
Humans did not evolve, they were created.
Your question is one of the many proofs of creation.
If humans had evolved they would have evolved to a state that water was not a requirement for life.
2006-06-20 18:17:05 · answer #7 · answered by ijcoffin 6 · 0⤊ 0⤋
All life's chemical processes involve water. That is part of its design. In order to 'evolve' anything different, it would be necessary to scrap all of biochemistry, and develop life forms that use another chemistry. This would require more computing power than we can ever dream to have, and so does require a divine designer.
2006-06-20 18:27:43 · answer #8 · answered by Favoured 5 · 0⤊ 0⤋
Our cells cant go long enough without it and to get our bodies to evolve we'd need millions of years in which we avoided water as much as possible so we could survive dehydration. We'd probably end up humps like camels if our attempt to stop needing water failed.
2006-06-20 18:17:48 · answer #9 · answered by Devilz Angel 3 · 0⤊ 0⤋
Did you know that the human body is 70% water? Water is essential to life
2006-06-21 13:49:32 · answer #10 · answered by Rhapsody 4 · 0⤊ 0⤋