I have to respectfully disagree with others here. There are indeed what are scientifically considered "higher life forms", and macroevolution really is about evolving into more complex beings. No not everything is going to eventually become "human", but we do expect them to develop more complex functions that improve their adaptability.
Over millions of years, we would expect many higher life forms to result and yes, I imagine humans would be virtually unrecognizable to us over that kind of period.
2007-03-08 03:42:03
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answer #1
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answered by btpage0630 5
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Human evolution is unique (may be a few exeptions i can't name) in that the development of independance in offspring takes a long time. Human offspring are comparitively helpless for longer than other animals. Humans actually resemble immature primate apes... hairless with juvenile features. This helpless, is due to the inordnate amount of learning required.... a human child is mostly incomplete. Its through culture and nuture that success is achieved.
Humans have two specialities over and above other animals. The surface area of the cerebral cortex is 6 or 8x (cant remember exact) that of the next most intelligent ape the bobo chimpanze.
Humans also have the most efficent cooling of any mammal. Humans can cross deserts by carrying a animal skin of water... their migration and habitat stem from this.
Thats it for the specialities we are mostly generalists able to adapt. Evolution has no end point... mass extinctions also play their part in the life that is present on earth... no asteroid no humans
2007-03-10 21:41:21
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answer #2
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answered by danie100uk 3
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It's useful to think of the animal kingdom, or all living things, as a large tree. Each species is a leaf on that tree, having evolved from a common ancestor at the bottom of the trunk, along whichever route (branches and twigs) brought it to its current position on the tree. People are part of a cluster of leaves that includes chimpanzees, gorillas etc., and some other leaves that have already fallen off - extinct humans, prehistoric apes, etc. Other clusters of leaves on the same branch are made up of other groups of mammals - carnivores, insectivores, etc. Another branch nearby has birds, another one reptiles. On the other side of the tree there are worms. Some branches are very old, some new and full of fresh green leaves. The tree is enormous and each group of animals will presumably continue to evolve in their own direction, which will depend on their traits, the variation within their groups and future changes in their particular environments. Given the complexity of this situation it is very unlikely that anything else will ever again evolve into something human-like, let alone actual humans. It's an interesting question, therefore, but one which is not really based on an up to date knowledge of how evolution works.
Last point - no species is "completed", as long as there is variation in its genes and in its environment. That includes us. You can argue about who's the "higher" or "lower" animal until the cows come home!
2007-03-08 14:01:52
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answer #3
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answered by Alyosha 4
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The expression "the most completed animal" is
virtually meaningless. All animals are complete
enough to survive, which is all that is required.
If by this expression you mean "most complex"
it is not correct for human beings. We are not
more complex than many other animals, and may be less so than some.
The notion that evolution is a steady trend in the
direction of greater complexity is false. For
most of the history of life there were only "simple" one-celled organisms. When the
multicellular ones appeared they very quickly
diversified into many different kinds of complex
organisms, and there has been no noticeable
increase in complexity since then.
In addition, there are two kinds (at least) of
complexity - the complexity of a large multi-cellular animal, with many different kinds of cells
and organs, and the inner complexity of a
single-celled organism in which the one cell has
to perform all the functions of an entire organism. The variation in these two kinds of
complexity is essentially that one is inverse to
the other. As the division of labor among the
different cell types increases the internal
complexity of a single cell decreases.
2007-03-08 11:59:36
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answer #4
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answered by Anonymous
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Evolution can only work if the weak are replaced by the strong as we now protect the weak humanity can not evolve plus it takes a freak being born with advantages over the normal species and due to natural selection the superior genes of the freak are then carried through eventually becoming the norm
2007-03-08 11:19:40
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answer #5
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answered by properwired 3
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No.
This is a very important point in biology. Humans are not somehow "better" or "higher" or "more complete" than other animals. They are just as "complete", just as well adapted to their environment as we are to ours.
All living things are NOT going to become more human.
As for what humans are going to become, that is impossible to predict. That's because that is affected by (a) future mutations; and (b) future environments; and both of those are unpredictable.
2007-03-08 11:17:38
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answer #6
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answered by secretsauce 7
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The only trait which humans have which others don't is the art of conscious thinking. Other animals have traits that we don't have such as the ability to fly, see infrared, increased senses of smell etc etc.
2007-03-08 16:32:47
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answer #7
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answered by Me! 3
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We are not the most completed animal.
2007-03-08 11:15:30
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answer #8
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answered by Anonymous
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