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Mutation. Giraffes got longer necks then, say, elephants, because some giraffes had slightly longer necks than others. These got more food, so survived, and had long necked children. Eventually they ended up like moodern giraffes
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Which term best describes the result of a new species envolving from an existing species?
Speciation is the best term to describe a new species developing from an existing one.
Why do species often form on new islands?
Islands are relatively isolated environments, so there it is less likely that an existing species will move in and outcompete a developing one, and also easier for an existing species to die out since there aren't external populations to replace them. This instability means that the environment can change more quickly, and therefore species must adapt more quickly, compared to the relatively stable environment on the mainland.
Did Charles Darwin make an enormous number of species inhabit earth?
No, he recognised that species evolve into new species.
What is sympatric speciation?
When there is no physical barrier, a new species arises within the home range on an existing species.
How does mass extinction affect surviving species?
Extreme radiation events of the organisms that survive the mass extinctions as they evolve to occupy the niches abandoned by the organisms going extinct.
Does biological evolution answer the question of the beginning of species?
Yes, evolutionary theory explains how new species emerge from existing species.
How does the process of evolution contribute to the origin of new species?
Evolutionary theory explains how new species emerge from existing species.
What term is used to describe the process for a new species developing from an existing species?
Speciation is the term used to describe the process for a new species developing from an existing species.
Which term best describes the result of a new species envolving from an existing species?
Speciation is the best term to describe a new species developing from an existing one.
What is the formation of new species from existing species?
The phenomenon is called speciation.
What forms new species?
New species derive from previously existing species through a process called speciation.
What might happen if one organism disappears from a ecosystem?
if it leaves an environmental niche, then another, already existing, species might take that niche; or a new one might evolve to fill it.
What do you call the process of change that produces new species from existing species?
evolution
Why do new species form on new islands?
they evolve to fill new niches
Why do species often form on new islands?
Islands are relatively isolated environments, so there it is less likely that an existing species will move in and outcompete a developing one, and also easier for an existing species to die out since there aren't external populations to replace them. This instability means that the environment can change more quickly, and therefore species must adapt more quickly, compared to the relatively stable environment on the mainland.
What is the role of time in classifying organisms?
Over time species evolve into new species.
How does genetic variation create new species over time?
New species evolve from a previous existing species. As challenges arrive in the environment of the old species over many many generations body features are lost and/or gained. Eventually the old species will either eventually die out or change habitats. So basic evolution.
