10 most extreme places on Earth. A unicellular organism is any life form that consists of just a single cell. This group includes most life on Earth, with bacteria serving as the majority. The main groups of single celled life are bacteria, archaea (both prokaryotes), and the eukaryota (eukaryotes).
A hero (masculine) or heroine (feminine) is a person or main character of a literary work who, in the face of danger, combats adversity through impressive feats of ingenuity, bravery or strength, often sacrificing his or her own personal concerns for some greater good.
These are all active words. Being a hero means being a helper, supporter, and friend. Hollywood portrays heroes in quite a different light: they have supernatural powers and wear capes. As much as I enjoy a superhero movie, I think this is a sad definition of what being a hero means. Itâs sad because itâs intangible.