The answer is A: create an outline for the answer.
Limbo is where unchristian and pagans go in the after life while the second circle(which i'm assuming you're talking about) is where sinners of Lust go.
"Go on with what your heart tells you, or you will lose all."
An example of a periodical is People Magazine.
In molecular biology and/or genetic engineering, "Efficient Expressions" are molecular mechanisms or enzymatic processes that enable the production, replication, regulation, reparation and recombination of multiple substances and molecules, including proteins, and in lots of cases in the architecture and assembly of protein machinery.
Certain proteins are essential in all of the processes mentioned above when it comes to the develop of genetic information found in all living organisms. We are talking about "Genes".