Evolution

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Re: Evolution
Reply #60 - July 04, 2011, 11:23 PM

When I said "lost" I didn't mean it died. I meant it struggled to survive. Why wouldn't it just go and try it's luck on other species instead of surviving against "Harsher Conditions"?
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Re: Evolution
Reply #61 - July 04, 2011, 11:25 PM

I dont understand How can it reproduce or 'try its luck elsewhere' if it died?

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Re: Evolution
Reply #62 - July 04, 2011, 11:30 PM

If you mean before it died then it depends on the type of animal you are referring too, and the level of its intelligence.

I think camels have evolved to be aware and would have gone in search of water, those that didnt died off. And those that were aware but didnt have water storage humps in the desert also died off.

Only those that were aware & had humps survived, the reason you dont see humpless camels todays.

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Re: Evolution
Reply #63 - July 04, 2011, 11:36 PM

Quote from: IsLame on July 04, 2011, 11:30 PM
If you mean before it died then it depends on the type of animal you are referring too, and the level of its intelligence.

I think camels have evolved to be aware and would have gone in search of water, those that didnt died off. And those that were aware but didnt have water storage humps in the desert also died off.

Only those that were aware & had humps survived, the reason you dont see humpless camels todays.

So basically the animal as to be aware enough to leave it's current situation and try it's hand elsewhere? And this "Awareness" comes from it's gene structure or elsewhere? Nice Videos by the way. The second one was eye opener.
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Re: Evolution
Reply #64 - July 05, 2011, 03:08 AM

Animals do move around over generations. A giraffe can't pick up sticks and move to a swamp, because it's ill adapted for it. But yes, over time selection pressures can force animals to find another habitat and, over time, they can adapt to that particular environment.
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Re: Evolution
Reply #65 - July 05, 2011, 04:30 AM

Quote from: Prince Spinoza on July 05, 2011, 03:08 AM
Animals do move around over generations. A giraffe can't pick up sticks and move to a swamp, because it's ill adapted for it. But yes, over time selection pressures can force animals to find another habitat and, over time, they can adapt to that particular environment.

But that doesn't work with humans though? How is that we can go about finding better places to adapt when other species can't? If the time for evolution has passed would not other species have the same "higher intelligence" as we do?
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Re: Evolution
Reply #66 - July 05, 2011, 04:48 AM

We are more flexible than a lot of living things, but we have our limits too. There are environments we can't survive, where other life thrives.

I'm not sure what you mean by 'time for evolution has passed'. Evolution isn't a means to an end and, contrary to appearances, it must not move towards complexity, or anything at all for that matter. It's merely happen-stance. If an animal is adapted well enough to a particular environment, it won't change much at all.
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Re: Evolution
Reply #67 - July 05, 2011, 04:52 AM

I didn't worded it well I meant that if all the time that has passed for evolution meaning if we all adapted in the same number of the "billions" would not another species exist similar to that of ours?
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Re: Evolution
Reply #68 - July 05, 2011, 04:53 AM

Not necessarily, no. But they did, actually. They are all extinct now.
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Re: Evolution
Reply #69 - July 05, 2011, 04:54 AM

Well, depends what you mean by 'similar'.
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Re: Evolution
Reply #70 - July 05, 2011, 04:55 AM

No. On the contrary we already fill our environmental niche and then some, there's no room for any other hominid species. Which is probably why the Neanderthals went extinct. We even kill each other off at an alarming rate, imagine what we'd do to non-human competition.

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Re: Evolution
Reply #71 - July 09, 2011, 10:23 PM

The human brain is a very sophisticated, yet evolved organ although you wouldn't know it by speaking to some muslims who seem to still have the cranial capacity of our early primate ancestors:
http://humanorigins.si.edu/evidence/human-fossils/species/sahelanthropus-tchadensis

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Re: Evolution
Reply #72 - August 21, 2011, 07:53 PM

Sorry for the thread bump. Didn't want to create a new thread on this:

Good 30 minute radio programme on human evolution: http://www.bbc.co.uk/iplayer/episode/b0135z1m/In_Our_Own_Image_Evolving_Humanity_Human_Cultural_Evolution_Versus_Genetic_Evolution/

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Re: Evolution
Reply #73 - August 21, 2011, 08:21 PM

Hi, Eternity. Evolution is what happens while you're planning something else.
There are no choices and no road maps and no set time schedules, just tiny mutations that are selected for and against. And when enough mutations have been selected for, you have a range of new species but these are just more organisms that are doomed to become extinct ad infinitum. Some stable environment species can endure for eons and elsewhere in dynamic environments the turnover of species can be rapid.

It seems to be all about exploiting and filling niches within ecosystems. There is an old truism - Nature abhors a vacuum.
There is obviously much more to it than this though. If you have a good grounding in 19C. English, read Origin of Species by Charles Darwin: if you don't, read some biological author, like Armand Le Roi, who interprets it for you in modern English or a good biologist in the language of your choice.

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