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omerusta
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What is the best answer to this question.
I have a very simple answer in my mind and wonder if anyone else can share it with me.
I have a very simple answer in my mind and wonder if anyone else can share it with me.
omerusta said:What is the best answer to this question.
I have a very simple answer in my mind and wonder if anyone else can share it with me.
mishrashubham said:However it would be wrong to assume that there would be only a few species had the entire surface of the planet been identical; since different organisms can exploit their environment differently and over time, influence and modify their surroundings.
mishrashubham said:Diversity in the living world is a direct result of the diversity in the local environments on earth.
omerusta said:This is not an acceptable explanation.
Species do not evolve because of the environment.
Species evolve for the environment.
ryan_m_b said:Indeed, like the opposite of convergent evolution organisms can adapt to utilise the same resources in different ways.
omerusta said:This is not an acceptable explanation.
Species do not evolve because of the environment.
Species evolve for the environment.
mishrashubham said:As Bobze said above. Evolution is not an active process in the sense that organisms don't have a conscious goal of becoming better suited to their environment. It happens passively, on its own. Even though we use words such as "Species X evolved into species Y", we do not mean to attribute the process of evolution to the the organism.
omerusta said:What is the best answer to this question.
I have a very simple answer in my mind and wonder if anyone else can share it with me.
omerusta said:This is not an acceptable explanation.
Species do not evolve because of the environment.
Species evolve for the environment.
omerusta said:Species evolve first and then adapt to environment.
Environment does not trigger speciation.
ryan_m_b said:Once again what is your answer? You claimed to have an idea.
omerusta said:Speciation does not follow certain specific environmental cues.
There are no such cues.
omerusta said:Environmental adaptation is the final result.
omerusta said:Species evolve for the environment.
omerusta said:Species do not evolve to adapt certain environment.
bobze said:Think about it like this (I find this analogy always helps people). Suppose I had this color bar representing an evolutionary lineage:
Now suppose I asked you to draw a line between red and orange. Where you draw the line and where I draw the line will probably be at two different RGB values. The reason being of course, the change from the "red species" to the "orange species" is very subtle--Its not a "click and where there" kind of thing. Rather it is an extremely gradual change in RGB values where a single pixel line (a "generation") is essentially (to us visually anyway) indistinguishable from the next.
Likewise, "species" are the same way. The variation vertically in anyone generation, is typically less than what is found within the population at large. Therefore, from parent to offspring (generation to generation) the distinction between "species" doesn't actually exist.
It only exists because the fossil record is incomplete (for example, we may have many "in between" generations missing between red and orange) and we are observing it in hindsight. Because of the incompleteness artefactual "divisions" can exist in a lineage--Which we call "species".
Consider another thought experiment put forth by Dick Dawkins. Which addresses the problems with the "biological species" concept and evolutionary lineage historicity.
Suppose you and I have a time machine and were off to collect historic ancestors in a manner rivaling the Victorian rape of the natural world. The ol' snatch and grab.
Suppose we dial our flux capacitor back to 10,000 BC and hop back through time.
[PLAIN]http://t1.gstatic.com/images?q=tbn:ANd9GcQV9wpCBWK5jCOo40cAhCAx22KahbsY6xfZA-TFxbD3zD3Rc1vYyQ
Abducting a person then bring them back to our future. In our sick experiment, we convince a modern individual to breed to this person from an ancestral population and see what happens.
Probably, we get offspring. So according to the biological species concept (we can interbreed--Simplified) we are of the same "species" as the individual from 10,000 BC.
No suppose we repeat our foray into history many times, hopping back in 10,000 year intervals. Eventually we run into an individual, well call individual X that cannot interbreed with us. So have we found an objective measure of our "species" its "ultimate origin"?
Consider the individual we abducted before X, we'll call Y. Individual Y, who we can interbreed with and is therefore "of our species" could very, very likely interbreed with individual X. In other words, individual Y's "X" is not the same as our "X", though both us and Y and still interbreed.
How then, can we have found a finite boundary to our species, when members we consider our "species" can interbreed with those "not of our species", while we cannot?
Species, much to the discomfort of even many professional biologists, aren't real tangible things---Lineages and populations are.
What is the point that you are trying to make by not telling your idea?omerusta said:Do not hurry! First things first.
He was pointing out that he's a troll.mishrashubham said:What is the point that you are trying to make by not telling your idea?
Euro Murzi said:The evolution change is not adaptative, but innovative accompany of adaptation.
Euro Murzi said:Innovative means "new things"! If adapt stay, if not, perish.
There are many factors that contribute to the diversity of species on Earth. One major factor is the process of evolution, which leads to the development of new species over time. Environmental factors, such as climate and geography, also play a role in the diversification of species. Additionally, the availability of resources and competition for those resources can drive the formation of new species.
As of 2021, there are approximately 8.7 million known species on Earth. However, scientists estimate that there may be anywhere from 10 to 100 million more species yet to be discovered.
The majority of known species exist on land, with approximately 6.5 million species. However, the number of species in water is also significant, with around 2.2 million species identified in the ocean.
The most diverse group of species is insects, with over 1 million identified species. This is followed by plants, with around 300,000 species, and then by fungi and vertebrates.
Scientists use a system called taxonomy to classify and categorize species. This system involves grouping organisms based on similarities in their physical characteristics, genetic makeup, and evolutionary history. The main levels of classification are kingdom, phylum, class, order, family, genus, and species.