Answer:
Any print can identify a criminal if it shows an adequate number of ridge characteristics
Explanation:
Monosaccharides are defined as the simplest form of carbohydrates. It consists of carbon atom, hydrogen atom and oxygen atom.
In disaccharides and polysaccharides, monosaccharides are the basic building blocks.
As two units of a monosaccharide leads to the formation of a disaccharide. Similarly, more than two units of a monosaccharide will lead to the formation of a polysaccharide.
Basic formula of a monosaccharide is 
, where n can be equal to or greater than 3.
What happens on Jane's elbow?
when a skin is scratched, the internal medium of the body enter directly in contact with the external environment, this could lead bacteria (saprophytic bacteria which lives on the skin, or bacteria from another source) it will provoke an inflammatory reaction to these pathogens and so, a pus will be formed (generally composed by dead neutrophils and purulent bacteria).
What happened on Sarah's knee?
The knee was just bruised, there's not skin scratching, it is still intact, so bacteria cannot go into the body through this injury. It just takes colors (red, blue, then yellow due to the rupture of capillaries which release blood, then will be degraded in bilirubin)
