Re: Early whales
Originally Posted by
Puddle Duck
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Interesting, but after so many species developing ( from a single celled amoeba) how did the species change in so many different ways. How did a fish grow into a giraffe and how is it that we (humans) have developed into the dominant and still the only species able to communicate on so many different levels ?
There seems to be nothing in between that can identify the transitions from one species to another.
Far too many questions
Originally Posted by
Donkeyman
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Lot of hows and why's PD, As regards species development
it is thought that different environments had a large part
to play in species developing differently. Another factor could
be radiation causing mutation and also slowly progressing
Climate change which causes environmental change.
The key is SLOW change
And limitless time.
Best Regards, Donkeyman.
Yes,, as Donkeyman said, it is slow change.we are talking millions and millions of years.
Little mutations occur (and still do). Some of those little mutations conferred an advantage to the organism, and so they prospered.
Some mutations might confer a disadvantage, and so those organisms died out.
Other mutations were neutral and so stayed, resulting maybe in different species of the same creature.
If the environment changed, those organisms best equipped to cope with that change survived and prospered. Others didn't and died out, so the ones that could cope passed on their genes.
And so it went on...... little mutations, changes in environment, over and over again over thousands of millions of years.
Mind-boggling, due to the vast stretches of time involved, but quite understandable.