Quote:There are some other differences, but evolution is slow compared to the lengths of time these groups have been separated.
But wouldn't species in totally different areas have
more differences as they evolved with their environments?
thunder_runner32 wrote:Quote:There are some other differences, but evolution is slow compared to the lengths of time these groups have been separated.
But wouldn't species in totally different areas have
more differences as they evolved with their environments?
I already answered you clearly. Species which are separated from each other will evolve separately, and therefore evolve differences, but the degree of such difference between them will depend on how long they have been separated. Tens of thousands of years is very little on the time scale of evolution.
cicerone imposter wrote:Brandon, The length of human evolution is a confusing one, because some scientists claim it's short and some claim it's long. Added to this confusion is the fact that this planet experienced an ice age during this period of evolution. Somebody needs to get this all organized in a way with some consistency so it makes sense.
Excluding creationist "scientists," most believe that life first appeared about 3 or 4 billion years ago. It's hard to figure out this late in the game. So what? Not only did the planet experience an ice age during evolution, humans lived through the last ice age. Again, so what?
Really, we're still in a massive ice epoch, and are starting to be due for another glacial cycle, which means frozen high latitudes and dry equatorial regions.
Pack a lunch.
Your "so what" is not the type of answer I am seeking. Besides, more recent guestimates of biological life on earth is estimated at less than 3 billion years.
C'mon, you guys. You all know that there was no meaningful life before the first beer!
neologist wrote:C'mon, you guys. You all know that there was no meaningful life before the first beer!
I'm counting on the situation to improve as the night wears on.
Me too; it's not even 6PM here in San Diego
A beer sounds like the best way to end the day.
neologist wrote:C'mon, you guys. You all know that there was no meaningful life before the first beer!
I want to be like you when I grow up, Neo.
Quote:But wouldn't species in totally different areas have more differences as they evolved with their environments?
Not necessarily. The environment they live in will be the biggest determination on what changes are made. If the species is living in a stable environment there may be little change. Not so if the environment is changing. The species will have to change with the environment if it wants to survive.
So one may see rapid evolutionary changes or long periods of time in which no changes occur.
http://cs.clark.edu/~biolabs/160/160NotesEvolution.doc
Quote:I already answered you clearly. Species which are separated from each other will evolve separately, and therefore evolve differences, but the degree of such difference between them will depend on how long they have been separated. Tens of thousands of years is very little on the time scale of evolution.
So, did all the humans all sprout up from one area at first, and then they slowly moved around the Earth?
This is a highly debated question; the "out of Africa" vs. "multiregional."
Out of Africa states that homo sapiens evolved from the homo erectus in Africa then left Africa.
Multiregionals position is Homo erectus left Africa, moved to different regions and evolved into Homo sapiens.
http://www.thenakedscientists.com/HTML/Columnists/paramindercolumn1.htm
Homo erectus seem to be living in Asia until the very recent past; 13,000 years ago. Who knows, they may still be there today.
http://news.nationalgeographic.com/news/2004/10/1027_041027_homo_floresiensis.html
I think it is more than a coincidence that the earth is so perfect to suit life...
Was the earth made for life or was life made for the earth or is the earth just an extension of life?
There are too many things that could have made life that it may never be known exactly where life came from in our universe.
Life could have just combined chemically in a pool of sludge, life could have come from atoms, volcanos, the sea, lightning, the sun, light, comets, the explosion of a sun, aliens and/or even God...
Life is a complex engine that is powered by photosynthesis.
Quote:Was the earth made for life or was life made for the earth or is the earth just an extension of life?
Thus far we only know of one planet that has life. Considering the infinite number of suns in the universe and the number of possible plants in that universe it would be silly to think that ours in the only one that has life.
I am willing to bet that life is spontaneous and will exist on any planet that has the right conditions. What it will evolve into will depend on its environment and circumstance.
No matter where life exists it will be just as complex there as it is here.
xingu wrote: I am willing to bet that life is spontaneous and will exist on any planet that has the right conditions. What it will evolve into will depend on its environment and circumstance.
xing; if life is spontaneous, where does God fit in? If the loving god of xing only wants us to experience the light, would he not create circumstances to facilitate this nirvana? For that matter, why not just have folks born into the light and forget all this disgusting matter?
