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.
The serpent, or snake, is one of the oldest and most widespread mythological symbols. The word is derived from Latin serpens, a crawling animal or snake. Snakes have been associated with some of the oldest rituals known to humankind and represent dual expression of good and evil.he serpent Hydra is a star constellation representing either the serpent thrown angrily into the sky by Apollo or the Lernaean Hydra as defeated by Heracles for one of his Twelve Labors. The constellation Serpens represents a snake being tamed by Ophiuchus the snake-handler, another constellation.