Salinity
contour are imaginary lines that drawn on a map joining places having the same height above mean sea level.
to locate places easily
Isohyets.
The noun 'longitude' is a common noun, a general word for the imaginary lines that run between the North and South Poles to measure east-west position of the Earth.A proper noun is the name of a specific person, place, or thing. The noun Earth is a proper noun, the name of a planet; the nouns North Pole and South Pole are proper nouns, the names of specific places.
So that it is easier to study the smller region instead of having to study one big thing.
contour are imaginary lines that drawn on a map joining places having the same height above mean sea level.
Contours..
isohyet
Imaginary Places was created in 2002.
The lines of same (iso) heat or temperature (therm) are isotherms
isohyet
BarsoomGorNarniaCamelotAsgardUtopiaAtlantisOzNeverlandPernWonderland
Hi-5 - 2003 Wishes Imaginary Places 1-33 is rated/received certificates of: Australia:G
isotherms
isotherms
parallels
Contours