My Evolution question

[IVB]

Originally posted by: Agnostos Insania
You mean the trachea and esophagus?

Eh, ok, i want a refund on my public school biology tuition.

*retreating back into ignorant hole from which I came*

 

[mercanucaribe]

Originally posted by: Jehovah

Originally posted by: ntdz

Originally posted by: Jehovah
We had gills, and since we're living on land, it was more efficient, hence easier to survive, without extra peripherals which would be useless/use up extra energy.

Evolution is based on random chances - it's not fatalistic, people! :roll:

Evolution is anything but random. It's based on trends that last for thousands if not millions of years...

Evolution is based on random variations, AKA mutations, that develop over thousands of years. The ones which have the most adapted mutations to their environment are the ones to survive.

Just because it happens over a long period of time doesn't mean that it's not random.

There don't have to be mutations for evolution to happen.

By the way, gills didn't disappear. See those holes with the frilly pieces of cartilage on the sides of your head? Those are gills.

 

[OulOat]

News = good.

Where did our gills go?

 

[Zerhyn]

Originally posted by: IVB
Some idiot god, must have been a civil engineer in his former universe/life, made a decision and is now too arrogant to change his mind.

Hey....that is my major! Probably too much work to go back and fix it...or lazy...

 

[BD2003]

Originally posted by: IVB
I was just holding my 2yr old daughter who woke up crying, and of course I accidentally swallowed some water into my lungs and started coughing like a madman when I began to wonder:

- If humans had gills to breathe underwater, and a mouth to eat with, wouldn't it have been superior to continue a paradigm where you have one orifice to breathe, one to eat? Then I wouldn't have scared my daughter with that damn cough attack.

Why has evolution centralized on a single one [the mouth] for both?

Hmmm. perhaps this is the "proof" that there is a god; If left to nature, we'd have had 2. Some idiot god, must have been a civil engineer in his former universe/life, made a decision and is now too arrogant to change his mind.

Because every single cell in our body represents an expenditure of energy to create and maintain it. An extra organ like gills would be so expensive energetically that it would be crippling to enough organisms that it would slowly be phased out. Not to mention external gills in a dry environment would dry us out so fast it would be ridiculous.

We dont have gills for the same reason that we dont have eagle wings, porcupine armor, chameleon camouflage, etc - we don't need it, so we dont waste our energy on it. Which is the same reason the appendix diminishes over time.

 

[spunkz]

Originally posted by: IVB
I was just holding my 2yr old daughter who woke up crying, and of course I accidentally swallowed some water into my lungs and started coughing like a madman

ok, you start off holding your daughter. then, "of course", you swallow water into your lungs. i'm so confused.......

 

[myusername]

Originally posted by: spunkz

Originally posted by: IVB
I was just holding my 2yr old daughter who woke up crying, and of course I accidentally swallowed some water into my lungs and started coughing like a madman

ok, you start off holding your daughter. then, "of course", you swallow water into your lungs. i'm so confused.......

LOL! 3 and a half hours and 30 posts later. :laughing;