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.
Boa constrictors are distinctly big snakes -- some of the biggest on Earth -- but that's not the only distinctive thing about them. From the color patterns on their thick, strong bodies to the tiny teeth that line their mouths, these snakes are covered with distinct physical traits that make them highly recognizable.hile there are different types of boas, they typically fall in roughly the same size range. Boa constrictors are usually around 13 feet long and weight about 60 pounds, though they can grow to weigh more than 100 pounds.