Firesign Questions Like Yours Ever Again

	What It Means to Evolve
	1. How can 1 species "turn into" another?
	1 species does not "turn into" another or several other species -- non in an instant, anyway. The evolutionary process of speciation is how one population of a species changes over time to the bespeak where that population is distinct and can no longer interbreed with the "parent" population. In order for one population to diverge enough from some other to become a new species, in that location needs to be something to keep the populations from mixing. Often a physical purlieus divides the species into two (or more) populations and keeps them from interbreeding. If separated for long enough and presented with sufficiently varied environmental conditions, each population takes its own singled-out evolutionary path. Sometimes the sectionalisation betwixt the populations is never breached, and reproductive isolation remains intact purely for geographical reasons. Information technology is possible, though, if the populations have been separate for long enough, that even if brought back together and given the opportunity to interbreed they won't, or they won't be successful if they try.
	ii. How can evolution produce circuitous organs like the eye?
	In the process of natural selection, individuals in a population who are well-adapted to a particular set up of environmental conditions have an advantage over those who are not so well adapted. These individuals laissez passer their genes and advantageous traits to their offspring, giving the offspring the aforementioned advantages. Generation after generation, natural choice acts upon each structure within an organ like the eye, producing incremental improvements in the process. Each tiny change in a structure is dependent upon changes in all the other structures. In this style, individual parts of a organisation evolve in unison to be both structurally and functionally compatible. Eventually, over thousands and sometimes millions of years, the pocket-sized improvements add together upwardly -- the simple, systematic process has produced an almost unfathomably complex organ. Recently, scientists have found clues to the evolutionary pasts of some of the nigh complex organs, helping to clarify how this process works.
	3. Does evolution cease once a species has become a species?
	Evolution does not stop once a species becomes a species. Every population of living organisms is undergoing some sort of evolution, though the caste and speed of the process varies greatly from one group to another. Populations that experience a major alter in ecology conditions, whether that alter comes in the course of a new predator or a new island to disperse to, evolve much more rapidly than practise populations in a more than stable ready of weather condition. This is because evolution is driven past natural selection, and considering when the environment changes, selective pressures change, favoring ane portion of the population more than heavily than it was favored before the modify.
	iv. Is evolution happening at present?
	Evolution is ever happening, though often at rates far too irksome to exist observed in a matter of days, weeks, or fifty-fifty years. The effects of evolution tin can be felt in near every aspect of our daily lives, though, from medical and agronomical dilemmas to the procedure of choosing a good mate. In medicine, at that place's the question of how long the antibiotics we take now will remain constructive, given the relatively fast rate at which leaner can evolve resistance to drugs. In agronomics, the need to protect this year'south crops is pitted against the concern that doing so will set the phase for insects to evolve pesticide resistance. For all of the states, in that location is the issue of decreasing biodiversity, as most scientists believe that life on World is currently undergoing a mass extinction in which 50 percent or more than of species will dice out. These are simply a few examples of ways in which evolutionary processes touch on our daily lives.

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Source: https://www.pbs.org/wgbh/evolution/library/faq/cat05.html

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