While some insects, like moths, spin a cocoon, a butterfly uses a chrysalis, which is essentially hardened skin. Different species of butterflies stay in the chrysalis, or pupal stage, for different periods of time. This can range from about seven days to more than a year, but for a large number of species it is less than 30 days. The well-known monarch butterfly, for example, spends between nine and 14 days in a chrysalis, while the painted lady butterfly spends only seven to 10 days in the chrysalis.
What was the Stephen A Douglas doctrine of popular sovereignty? In a nutshell, it stated that slavery in Kansas and Nebraska would be decided by popular sovereignty, which is pretty much where the people would decide on the matter with a m â¦ ajority.
The term popular sovereignty was not coined by Senator Douglas. Rather, in connection with slavery in the territories, the term was first used by presidential candidate and Michigan U.S. Senator Lewis Cass in his Nicholson Letter of 1847. But the term popular sovereignty is now closely tied to Douglas's legacy.