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Where are the dinosaurs?

Shemjaza

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So, in the view of secular evolution, things are not getting better?
Life is always adapting to their environments... but the interaction between life and the environment is complex.

For example the climate has a strong effect on many organisms, but some organisms (for example us) can also have a significant effect on the climate.
 
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driewerf

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So, in the view of secular evolution, things are not getting better?
Better adapted to their environment.
the polar bear is adapted to reists cold. Camels are adapted for living in the desert, and can retain water. Neither is better than the other, but each is better in a given environment.
 
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Gadarene

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Are humans evolving?

What are the signs that humans are evolving into not humans?

Are our genes changing over time? Yes, so they are evolving.

Are we speciating? No, because there hasn't been isolation between different groups of humans for long enough. Speciation is unlikely to occur within mankind - at least not while we're confined to one planet.
 
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mzungu

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So cooking eliminated a reproductive advantage that humans with wisdom teeth had. Is that the same as saying that cooking food causes evolution?
Wisdom teeth can cause severe gum disease and this can result in miscarriages. So yes it does effect reproduction.

Excerpt from http://www.parentdish.com/2005/09/22/wisdom-teeth-can-cause-pregnancy-problems-says-study/


What can possibly be the relationship between wisdom teeth and pregnancy, you might ask? I wondered the same thing myself when I saw this article headline. it appears that a study in the Journal of Oral and Maxillofacial Surgery of 254 dental patients in their 20s found that 60 percent of patients who had not had their wisdom teeth extracted were in the early stages of developing gum disease. A similar study of 1,020 pregnant women found that those who had never had their wisdom teeth extracted were more than half as likely as other women to have premature births. From these studies, researchers have concluded that the effects of gum disease on pregnancy bear resemblance to the effects of smoking. How's that for motivation to brush thrice daily?
Another study earlier this year implied that periodontal problems could lead to preeclampsia, the most common malady of pregnant women in the Western world.
 
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Tiberius

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They are nearly identical. Very little change flies in the face of ToE after hundreds of millions of years.

SO the answer is no.

Please tell me why you think an animal that is extremely well adapted to its environment will change greatly if the environment stays the same?
 
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Tiberius

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What advantage do smaller jawed humans with no wisdom teeth have over larger jawed humans with wisdom teeth do you reckon?

People with smaller jaws have less jaw material that they need to make. The materials which would go to produce a larger jaw can instead go to other parts of the body.
 
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Tiberius

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Being better cooks causes evolution?

It can, by reducing a pressure that acts on Humans.

When food is cooked, it means that Humans do not need the larger jaws that characterized our ancestors. Thus, any individual with a smaller jaw will not be at a disadvantage and instead will benefit from the fact that their body can produce their jaws with less material and less cost.

A lack of good dentists cause evolution?

It can, by removing individuals that have genes that make it harder for them to live without a dentist.

For example, individuals that have troublesome wisdom teeth will have a harder time surviving, as they will find it more difficult to eat. They will be more likely to starve without the aid of a dentist, or they could suffer from malnutrition and be more susceptible to disease. Individuals that are genetically predisposed to have no wisdom teeth will avoid these problems and will, in the long run, be more likely to produce more offspring. Since these offspring will also carry the "no-wisdom-teeth" genes, the lack of wisdom teeth will become more prevalent in the population.
 
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JoeyArnold

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Better at survival and reproduction, yes. Not "better" according to some subjective human standards.


Humans are physically evolving so that they can adapt, survive, reproduce, better?
 
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JoeyArnold

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Well, in the last few hundred years you could argue that humans have been adapting the world to suit them instead, but for the most part of human history, yeah.

is that the same as physical change, mutation, adaptation, evolution?
 
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keith99

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Why? Why must fossilization occur rapidly? Why must they be buried alive? Are there alternatives to this? Are there examples where it has happened slowly over a course of time? How much time? These are questions I'm interested in.

An animal does not need to be burried alive.

Fossilization does not happen rapidly.

What does need to happen is for the corpse to get out of "circulation" quickly and to stay that way.

If an animal dies and is above ground the carrion feeders will strip the flesh from the bones and the larger ones will break the bones to get the marrow.

If something dies in the desert and there are no such (and in most deserts there still are carrion feeders) exists the flesh will still rot or dry out. The bones will be lleached by the sun and most likely erroded by the blowing sand. It may take hundreds of years, but in time nothing will be left.

But if somethgin is covered by a landslide or in a mud bog or tar pit it MIGHT end up as a fossil. It will then need ot keep getting burried deeper and deeper.

BUT lets say it is a river bed, it may ger burried deeper and deeper for 100, 200 or 2000 years, but if things change and instead of dirt being deposited it get eroded then the bones get exposed and tossed and broken by the river.

Burried deep enough and long enough over time the minerals in the bones get replaced over time.

Oh and the final kicker. There are 1000s of times as many Fossils than we have found. Man does not magically travel though rocks. We see Fossils only when they finally get exposed again. The timing and mode of exposure needs to be right or they are nover noticed by mankind.
 
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