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.
Pet Snake #4 - The Ball Python. I've put the ball python last on my list of best types of snakes to keep as pets for one reason only. They can be a bit more finicky with their eating. For example, I currently keep four ball pythons that are the same age and kept in the exact same types of conditions (cages, heat, etc.).o, you've decided to get a pet snake and now you're wondering which kind of snake to get. If so, I promise you will find this article helpful. I've listed below four of the best snakes to keep as pets based on my 25 years of snake keeping experience.