Horizontal datums are used for describing a point on the earth 's surface, in latitude and longitude or another coordinate system. Vertical datums measure elevations or depths. In engineering and drafting, a datum is a reference point, surface, or axis on an object against which measurements are made.orizontal datums are used for describing a point on the earth 's surface, in latitude and longitude or another coordinate system. Vertical datums measure elevations or depths. In engineering and drafting, a datum is a reference point, surface, or axis on an object against which measurements are made.
There are 25 known species of pythons in the world. Like all snakes, pythons are cold blooded. Pythons are not venomous; they kill their prey by constriction. Some of the different types of pythons are the reticulated python, the ball python, the Burmese python, the green tree python, and the carpet python. While some of these species should not be held captive by a non-professional, other types of pythons can make good pets.
Many types of snakes make great pets, including ball pythons, rosy boas, king snakes, corn snakes and milk snakes. Since snakes are so prominent in mythology and literature, there are a ton of great names you can pull from books. Other good snake names reflect the animal's appearance.any types of snakes make great pets, including ball pythons, rosy boas, king snakes, corn snakes and milk snakes. Since snakes are so prominent in mythology and literature, there are a ton of great names you can pull from books. Other good snake names reflect the animal's appearance.