After the Cretaceous–Paleogene extinction event wiped out the non-avian dinosaurs (birds being the only surviving dinosaurs) and several mammalian groups, placental and marsupial mammals diversified into many new forms and ecological niches throughout the Paleogene and Neogene, by the end of which all modern orders had appeared.
Answer:
In diarrhea, gut motility is increased. Whatever is ingested, comes out quicker.
Polio drops contain attenuated polio virus. Once given, a large proportion of this viral dose stays in intestine and proliferates to show it’s effect.
If given during diarrhea, with increased motility of gut, most of it will be thrown out fast, resulting in to lesser efficacy. For this very reason we wait till diarrhea is over.
Explanation:
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Updrafts occur as part of the turbulence that is created when air passes over topographic barriers such as mountains.