Used to define and identify geological times.<span />
The monomer of a nucleic acid (DNA is made up of multiple nucleic acids) is a nucleotoid.
He based his hypothesis on a statement made by a dairymaid.
It may be perfectly healthy that their newborn is sleeping this long so unless they start displaying other strange symptoms that cause concern, there is no need to worry. They could suggest that they are concerned to the midwife if they feel anxious, to get a professional opinion.
