Its called DEATH.
If you ain't fit then you're more likely to die.
To the detriment of you progeny (if any).
(The fact of) Evolution. The fact of evolution applies to individual organisms and can not be refuted.
Organic evolution is the process by which the genetic makeup of a species changes over time. There are several mechanisms by which this can happen: natural selection, genetic drift (chance), migration and mutation. So natural selection is one possible way in which evolution can take place. Most biologists agree that natural selection is the most important mechanism of evolution. This mechanism was first discovered by Charles Darwin and, independently. by Alfred Wallace.
natural selection
didn't you just do that? or did you mean something else? ... Or........... Over time, the change in a species is called evolution. and. Natural selection helps certain animals in a species survive.
'Macro-evolution' is not a process in itself. Rather, it is a perspective on the effects of evolution. 'Micro-evolution' is those effects seen from close-up; by 'zooming out' one sees those same results in a wider scope called 'macro-evolution'. All evolution is driven by genetic variation and natural selection.
natural selection
natural selection
Natural selection means survival (and breeding) of the fittest, it is key to the evolutionary process.
Natural selection is a mechanism of adaptive change in evolution.
Natural selection explains the process of evolution: evolution by natural selection. It basically means that species with the highest fitness (survival rate) will live, and be selected by nature for the characteristics they possess that make them more apt to survive. Because of natural selection, evolution occurs.
The book, On The Origin Of Species, " suggested " that organisms evolve through the process of natural selection. The nonrandom survival and reproductive success of randomly varying organisms
Natural Selection
Natural selection is only the result of changing environments, mutation and the variation resulting therein. Natural selection is the process of adaptive change and the main mechanism of evolution that leads to speciation. Natural selection is a process as mutation and variation are grist to the mill of natural selection.
Natural selection.
Natural selection.
Natural selection.
Natural selection is the process which determines the shark's evolution. It is humankind that is threatening the sharks' survival.