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Discussion in 'Religious Issues' started by jokeruh, May 24, 2011.
For what reason did giraffes evolve such long necks?
Allowing for analogous language: They evolved them to reach leaves on the tops of trees.
Environmental pressures and natural selection.
The ones that had long legs and short necks died of dehydration. See Salvador Dali's imagery.
Really, they used to be aquatic. They were among the first animals to develop lungs rather than gills, but had to maintain their ability to navigate around in deep water. Their necks have been getting progressively shorter for incalculable eons.
It's more about their intolerance to pungent odors that anything. They had bad seats on the Ark - among the hogs, monkeys, and skunks. They stretched to the max to get a breath of fresh air.
Why is their vocal nerve 14 feet longer than it needs to be? It travels from the brain all the way down the neck, loops around the aorta near the heart and then travels back up the neck to the larynx. Ours does the same.
Laryngeal nerve -- great example.
Oh! Oh! Oh! I know, and it does not seem Intelligent.
I will try and keep a running tally.
So far we have:
1. evolved long necks to eat vegetation at the tree tops (Jolly Giant)
2. evolved long necks so they could live in deep water while breathing air above water [necks are actually getting shorter now - presumably because they can now live on land and therefore don't need to live in water](furioso)
3. have no idea (Animal Mother, dbcooper, Artificial Grape)
So they could see the action while in a crowd without jumping up and down.
Or perhaps they were created that way, as interesting animal that eats leaves from a tree.
Perhaps you should try and keep an accurate one.
You've put forth a hypothesis, how do you propose to test it?
how about to see, hear, or smell their friends (or enemies) far across the savannah? they were the original long distance carriers.
Or possibly for protection. Protect the head, the rest follows. Maybe they have terrible stinky gas from all those leaves, and evolved long necks to spare them the discomfort of their own stench.
A high-up head puts the intake valve (mouth), eyes, ears, nose, and brain quite a ways up. Could be a number of reasons.
Perhaps they used to have wings, and much more robust tail. they might have been dragons at one point. that long laryngeal nerve is adapted from a firestarter. Instead of screaming and spouting flames, now they just chat like the rest of the animals.
He said you didn't have any idea. Are you saying that you do?
It's clear to me, from many prior conversations, that you really don't.
The same way you tested yours.
The ability to eat food that is not available to shorter-necked animals.
The ability to see sense predators at a greater distance.
I suspect that you're trying to collect possible explanations while sitting on a Creationist's attempt to refute giraffe evolution such as this one from The Nature Institute that you will reveal after collecting possible explanations.
Below are two articles on the Giraffe neck that may interest some:
Giraffe neck, pt 1
Giraffe neck, pt 2
Here is a cool 4-minute video from a giraffe autopsy that shows the laryngeal nerve going from the brain, all the way down to the heart and back to the larynx. Roughly a 15 foot roundtrip for what needed to span less than 1 foot. A brief evolutionary explanation of the nerve is provided.
What is important to recognize with evolution is that of the millions of species that have lived, the fossil record currently only captures a small percentage of those species, and while many examples of adaptation and speciation can be shown, all the factors influencing species millions of years ago are not known, and many will probably never be known. This does nothing to weaken the argument of evolution because time and again predictions are made and successfully validated by the theory of evolution, and there is enough to be conclusive without tracing every single species, and there has never been an anachronistic fossil found.
So while the question is interesting, there is not currently a consensus on what were the factors facing giraffes that led to their long necks. What is known is that developing the long neck provided an advantage to the odds of producing surviving offspring.
That certainly won't satisfy some, but that's the scoop.
That leaves the equally long question of what is Intelligent about the laryngeal nerve?
Darwin knew porn was coming... seems like a great idea for a critter.
Yes. One would think you'd realize that after I offered one in post #3.
Have you really become so sad that you can't participate in conversations but have to sit back and try to snipe at those who do?
You mean observation and research? Please, do lay out such a program which could substantiate a creationist position.