Biodiversity is having an ecosystem with various life forms (organisms) inhabiting it. If a species goes extinct, then automatically biodiversity is decreased. This also means that other animals that may rely on this specie as a food source may also die off, resulting in a further loss of biodiversity. This will have a large ripple effect throughout the entire ecosystem.
Evolution ensures that species are able to adapt and avoid extinction. /\
In the coarse of evolution extinction can happen ,if the adjustments made by the organisms does not help to survive in the environment.
Extinction, from natural forces, is the role of natural selection.
All things being otherwise equal, it's a strong indication that the species was not well adapted to surviving the environmental pressures.
It's not a fault, nor a superiority nor a complexity indicator.
There are schools of thought where extinction plays no direct "role" in evolution, except to define a terminal position in natural selection, but most generally agree that there is a role, but it's not well-understood.
Of course, those don't apply to catastrophic or targetted extinction (like a comet hitting the earth, nuclear bomb, forest-fire, introduction of a new species, overhunting...).
Consider one extinction event. The event of 65 million tears ago that destroyed the dinosaurs. Mammals underwent an extreme adaptive radiation event and evolved to fill many ecological niches left open by the demise of the dinosaur.
As an example take the dinosaur extinction of 65 million years ago. At that time most, if not all mammals, were shrew like creatures. The adaptive radiation of the mammals into all the ecological niches the dinosaurs vacated and their extreme variation from that point was adaptive radiation writ large.
Evolution ensures that species are able to adapt and avoid extinction.
Mass extinctions may open up new ecological niches for the survivors to diverge into.
The importance of genetic duplication in chordate evolution is that it eliminates the possibility of extinction. This is by generation of new cells which will keep evolving to preserve the species.
convergent evolution
Research on evolution is no more limited than any other scientific research. In fact, hundreds of research papers related to evolution are published every year.
See the related link on Charles Darwin.
There are sevarel reasons for extinction. They includeover huntingfor dinos huge volcano eruptions that block out the sun for extended periodsLarge asteroid strikesAbrupt climate changenuclear war
The evolution of mammals
they r related by having the same family blood
they r related by having the same family blood
Extinction is part of the Theory of Evolution. This goes along with natural selection and survival of the fittest. Organisms that go extinct do so because they are no longer able to survive in the habitat.
Well... we can say that the lack of evolution or evolutionary development can certainly aid extinction. If the environment changes too quickly in a direction that is harmful to a species, then the species needs to either evolve or become extinct.
A mass extinction event creates a large gap in the biodiversity of an ecosystem or multiple ecosystems, which results in a rapid period of evolution of a range of different species that weren't particularly specialised to fill that niche.
Extinction of a particular animal species occurs when there are no more individuals of that species alive anywhere in the world. The process of extinction is a natural part of evolution.
The theory of evolution explains the process of biological change and adaptation over generations in living organisms. Language evolution, on the other hand, refers to the development and changes in human languages over time. While both concepts involve change and adaptation over time, they occur in different domains - biological for evolution and linguistic for language evolution.
Theory of evolution refers to animals and plants evolution along the time. Language evolution is another issue, not entirely related to the theory of evolution. It follows the theory of evolution on some way but it is related to culture evolution, not to the physical attributes evolution.
B. W. Roberts has written: 'A model for evolution and extinction'
One word: extinction. As long as life exists, organisms will reproduce with variation - which means per definition that evolution will occur. The only way for evolution to stop happening is for life to cease existing.
The role of mass extinction in evolution. At the most basic level, mass extinctions reduce diversity by killing off specific lineages, and with them, any descendent species they might have given rise to. ... But mass extinction can also play a creative role in evolution, stimulating the growth of other branches.