Devils Advocaat wrote:
> On 6 Sep, 02:13, "adman" wrote:
>> Devils Advocaat wrote:
>>> On 5 Sep, 21:43, "adman" wrote:
>>>> Devils Advocaat wrote:
>>>>> On 5 Sep, 19:25, "adman" wrote:
>>>>>> Devils Advocaat wrote:
>>>>>>> On 5 Sep, 17:05, "adman" wrote:
>>>>>>>> The increase in relative abundance of the dark type was due to
>>>>>>>> natural selection. The late eighteen hundreds was the time of
>>>>>>>> England's industrial revolution. Soot from factories darkened
>>>>>>>> the birch trees the moths landed on. Against a sooty
>>>>>>>> background, birds could see the lighter colored moths better
>>>>>>>> and ate more of them. As a result, more dark moths survived
>>>>>>>> until reproductive age and left offspring. The greater number
>>>>>>>> of offspring left by dark moths is what caused their increase
>>>>>>>> in frequency. This is an example of natural selection.
>>
>>
>>>>>>>> Soot from factories hardly seems like a natural phenomenon.
>>>>>>>> Without the soot, that darkened the birch trees the moths
>>>>>>>> landed on, the whiter moths would not have been eaten by the
>>>>>>>> birds.
>>
>>>>>>>> This seems to be a case of UNnatural selection caused by an
>>>>>>>> UNnatural event from a machine that produced soot.
>>
>>>>>>> So you reckon soot is unnatural do you?
>>
>>>>>>> Do you know what soot is?
>>
>>>>>> is the factory part of the natural environment?
>>
>>>>> I will ask you again, do you know what soot actually is?
>>
>>>> Do you?
>>
>>> I do,
>>
>> i doubt it.
>
> It is an amorphous form of carbon produced through incomplete
> combustion of organic compound.
>
> It can also be produced by natural processes, a fact that seems to
> have escaped you.
In this instance soot was not produced by natural processes. And like it or
not, the factory is part of the selection equation in this instance. The
factory set up an unnatural event that allowed the birds to see the white
moths. Without this unnatural event, nature would otherwise not have
selected the white moths for extinction.A fact that seems to escape you.
