What happens if a species does not evolve?

If conditions change more quickly than a species can evolve, however, and if members of that species lack the traits they need to survive in the new environment, the likely result will be extinction.

What will happen to that species if none of the individuals within a particular species can survive to reproduce?

If the species is not able to reproduce, the numbers will dwindle and eventually lead to extinction.

Can there be selection without evolution?

Natural selection can occur without leading to evolution if differences among individuals are not genetically based. Nonetheless, much of the phenotypic variation within a population is, in fact, genetically based; consequently, natural selection often does lead to evolutionary change.

Why do species try to survive?

The desire to live and to reproduce are closely tied. Survival in very simple organisms means replicating themselves. Through evolution by natural selection, basic organisms became increasingly complex, resulting in humans, butterflies, lions, spiders etc.

How can you relate species extinction to the failure of species to adapt to the changes of environment?

Evolutionary rescue from extinction requires abundant genetic variation or a high mutation supply rate, and thus a large population size. Although natural populations can sustain quite intense selection, they often fail to adapt to anthropogenic stresses such as pollution and acidification and instead become extinct.

How does the environment affect the extinction and evolution of species?

Environmental change and isolation of groups of organisms play an important role in evolution. Change in an organism’s environment forces the organism to adapt to fit the new environment, eventually causing it to evolve into a new species.

Is evolution the same as natural selection?

Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations.

Does evolution stop once a species has become a species?

Evolution does not stop once a species becomes a species. This is because evolution is driven by natural selection, and because when the environment changes, selective pressures change, favoring one portion of the population more heavily than it was favored before the change.