Answer:
A) 1000
Most viruses are 1000 times smaller than the average cell
The answer is young child.
Nasal regurgitation it's when the food regurgitates out of the nose.
This is more likely to occur in babies/ young children with some birth defects in the soft palate, or if they have a cleft lip. Those birth defects, usually, get fixed with surgery when they are still children, that's why is less frequent after that age.
A weak bond in which a Hydrogen atom in one Molecule is Attracted to an electronegative atom (usually nitrogen or oxygen) in the same or different molecule. A type of chemical bond where two atoms are connected to each other by the sharing of two or more electrons.