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.
True, the enormous reticulated python (Python reticulatus) can exceed twenty feet in length. The wee anthill python (Antaresia perthensis), meanwhile, usually attains a child-like twenty inches. Despite all the differences weâve laid out, several boas and pythons occupy identical roles in their respective habitats. That handsome critter pictured above is an Aussie native called the green tree python (Morelia verdis). Half a world away lives South Americaâs emerald tree boa (Corallus caninus), which you can check out in the photo below. iStock No, youâre not seeing double.