Pre-kindergarten provides learning to children who are 4 years old on or before September 1. Pre-kindergarten for three-year-olds provides learning to children who are 3 on or before September 1. Most programs are 3 hours but extended day is offered in some schools.
and Sub-species:-. 1  Boa. 2  Boa constrictor, Boa constrictor. 3  Boa constrictor amarali, Amaralâs boa. 4  Boa constrictor constrictor, Red-tailed boa. 5  Boa constrictor imperator, Common northern boa. 6  Boa constrictor longicauda, Tumbes Peru boa. 7  Boa constrictor melanogaster, Ecuadorian boa.
The largest and heaviest snake to ever be discovered is the titanoboa, an extinct snake species that resembles a modern, but smaller, boa constrictor that, like its namesake, is a constrictor snake. The largest snake still alive is the reticulatus python, another constrictor snake found in southeast Asia. A common trait for constrictor snakes is being non-venomous, instead uses its immense strength granted by its sheer muscles in its body to wrap around and crush prey on a whim.