source: [lemma=be] [lemma=reproductively] [tag=VBN] ([tag=IN] [□])?
destination: [lemma=be] [lemma=reproductively] [tag=VBN] ([tag=IN] [!□])?
spec: The combination of Pooh and literary criticism allows Crews to skewer the critics . Trial plants must also be reproductively isolated from weedy relatives by a minimum of 50 metres , unless other methods of reproductive isolation has been successfully used . With little chance for rehabilitation , hopelessness prevails in the prisons , where the rising sense of injustice and despair has led to an epidemic of revolts . It is defined as a potentially interbreeding group comprising various populations that are reproductively isolated from other such groups . Ernst Mayr 's Biological Species Concept , the most widely accepted definition for species , defines species as " groups of interbreeding natural populations that are reproductively isolated from other such groups " . These different species live in different ecologies and are reproductively isolated by their characteristic songs . The most useful definition of species ( which does not assume evolution ) for sexual metazoans is the Biological Species Concept : species are groups of actually or potentially interbreeding natural populations that are reproductively isolated from other such groups ( Mayr 1942 ) . Yet for all their threats , what the Islamists -- from Hezbollah in Lebanon ' s Bekaa Valley to the Iranian government in Tehran to the jihadists in Iraq ' s Sunni Triangle -- don ' t understand is that they are slowly pushing tired Westerners into a corner . But with snowmen instead of hideously out-of-control genetically mutated zombies , obviously . I am glad I have got a good supper for her though , - thank you , Miss Johns . It might be that the adult females of the newly formed group were reproductively suppressed due to that social stress , and therefore were not advertising reproductive cycles ( Dunbar , 1980 ) . Species are usually defined as populations of animals that are reproductively isolated from other populations ( i.e ., they can not breed beyond their own population ) , though there are enough exceptions that one might adopt a less formal definition such as " a species is a group that someone who studies systematics has said is different from other groups . A Web survey with 275 respondents showed that 63 percent of undergraduates supported smoke-free housing . Everybody believed that because animals such as sea urchins and abalone and some kinds of clams and scallops produced literally millions of gametes , they figured there was no chance that the animals could ever be reproductively limited . I found the chapter on Yahoo Finance to be the most useful in the book . I have great reservations about the approach the Administration takes with respect to the Medicare program . The concept defines species as " groups of interbreeding natural populations that are reproductively isolated from other such groups .