The Three domains-Some Characteristics: Bacteria: Domain Bacteria is familiar to most people when associated with human or animal disease. However, most bacterial species do not (and cannot) cause disease. Many species even play beneficial roles by producing antibiotics and food.
Ampersand. The ampersand is the sign &, used to mean âandâ. The shape of the symbol originated as a ligature for the Latin et (âandâ) â that is, it represents the merged âeâ and âtâ. The name ampersand also represents a merge, although one that is perhaps more accidental.
A symbol most popular to Pythagoreans (they have made use of it to identify each other), the Pentad is a five-pointed star that also means other things. It can represent the number five in a lot of ways but can also be interpreted to mean invulnerability, power and life.