See answer (1) Best Answer Copy For one thing maps are something you carry with you when you are traveling. You can simply keep a map in your pocket or bag get it out when you need it and fold.

For categorizing each taxonomic rank, such as family, genus, species, etc., different keys are used. It is also useful in identification of unknown organisms. Keys are of two types- indented and bracketed keys. Indented key provides a sequence of choices between two or more statements while in bracketed key, a pair of contrasting characters are.

Google is updating its helpful content system to better understand and rank content created from a personal or expert point of view. Content creators should focus on providing original,.