Answer:
Lines of latitude measure north-south position between the poles. Lines of latitude are all parallel to each other, thus they are often referred to as parallels.
Lines of longitude, or meridians, run between the North and South Poles. They measure east-west position. The prime meridian is assigned the value of 0 degrees, and runs through Greenwich, England. Meridians to the west of the prime meridian are measured in degrees west and likewise those to the east of the prime meridian are measured to by their number of degrees east.
-- One feature of Earth is an atmosphere rich in nitrogen and oxygen.
Very unusual.
-- Another feature of Earth is vast quantities of liquid and solid water.
Very unusual.
-- Another feature of Earth is a range of temperatures near the melting point
of water.
Very unusual.
It's a Sextant
here is a photo of it with full indications
Hope this Helps :)
Before we carved pumpkins, the Irish chiseled creepy faces onto turnips. Pumpkins with ghoulish faces and illuminated by candles are a sure sign of the Halloween season. The practice of decorating jack-o'-lanterns originated in Ireland, where large turnips and potatoes served as early canvasses.