One thing never evolves into something else!

[shinbits]

There is no decision made. You asked for reasons why a fish would go on land I gave you two.

When the fish first came on land, did it have lungs, or did it have gills?

 

[Mallon]

When the fish first came on land, did it have lungs, or did it have gills?

Both. Sarcopterygians (from which amphibians came) have both lungs and gills, and can use both is necessary.

 

[shinbits]

Both. Sarcopterygians (from which amphibians came) have both lungs and gills, and can use both is necessary.

If the fish spent all it's time in water, why did it develop lungs?

 

[Edx]

If the fish spent all it's time in water, why did it develop lungs?

....

And around we go, merry are we not.

 

[Mallon]

If the fish spent all it's time in water, why did it develop lungs?

Because God wanted it to.

Seriously, read a book and find out. Air-breathing in fish is, in fact, a primitive character of all osteichthyans. We find it in even most basic placoderms. There is obviously some selective pressure to retain lungs (escape from predation, competition, etc.), even though they are not necessarily needed.

 

[shinbits]

Because God wanted it to.

Seriously, read a book and find out. Air-breathing in fish is, in fact, a primitive character of all osteichthyans. We find it in even most basic placoderms. There is obviously some selective pressure to retain lungs (escape from predation, competition, etc.), even though they are not necessarily needed.

Well, is there any answer to why it may have developed lungs, since it spent all it's life in water?

 

[shinbits]

The human shoulder is certainly not as suited to brachiation as the ape shoulder. But that's because the human shoulder is slightly modified version of a shoulder structure that, lo and behold, is unique to apes.

According to evolution, were humans at one time suited for branchiation?

 

[LogicChristian]

According to evolution, were humans at one time suited for branchiation?

We still are suited for brachiation to some degree, just not as much so as apes.

 

[Mallon]

Well, is there any answer to why it may have developed lungs, since it spent all it's life in water?

Probably as an adaptation for surviving in oxygen-poor water.

 

[shinbits]

We still are suited for brachiation to some degree, just not as much so as apes.

So at one time, humans were just as able as other apes to swing through trees with thier arms?

Probably as an adaptation for surviving in oxygen-poor water.

If it takes millions of years for evolution to happen, why didn't the population die out in oxygen-poor water?

 

[Baggins]

Shinbits:

Have you now accepted the evidence given to you about prokaryote microfossils dating back to 3.5 billion years ago. Or have you just ignored it and moved on?

 

[LogicChristian]

So at one time, humans were just as able as other apes to swing through trees with thier arms?

Distant human ancestors perhaps, but not human beings.

 

[shinbits]

Shinbits:

Have you now accepted the evidence given to you about prokaryote microfossils dating back to 3.5 billion years ago. Or have you just ignored it and moved on?

There was none given. Only links that stated that micro-fossils existed then, but nothing showing how they'd know that.

 

[shinbits]

Distant human ancestors perhaps, but not human beings.

why would we lose this ability?

 

[Mallon]

If it takes millions of years for evolution to happen

Why are you assuming that? Evolution proceeds at varying rates.

why didn't the population die out in oxygen-poor water?

Perhaps the waters were never so poor in oxygen as to be fatal. Or maybe we should just stop trying to answer the question scientifically at this point and just invoke a miracle of God.

 

[LogicChristian]

why would we lose this ability?

Because we developed other abilities that didn't involve brachiation through an arboreal environment. The development of bipedalism for instance would tend to deemphasize traits that would focus on the arms as the primary means of locomotion.

 

[shinbits]

Because we developed other abilities that didn't involve brachiation through an arboreal environment. The development of bipedalism for instance would tend to deemphasize traits that would focus on the arms as the primary means of locomotion.

okay. thank you for taking time to answer these questions.

 

[shinbits]

Perhaps the waters were never so poor in oxygen as to be fatal. Or maybe we should just stop trying to answer the question scientifically at this point and just invoke a miracle of God.

 

[Mallon]

Just so we're on the same page, I was being facetious.

 

[shinbits]

Just so we're on the same page, I was being facetious.

So was I. I felt like I was backing you into a corner and you posted that in a mini-frustration. Hence, a smile.