Difference Between Convergent and Divergent Evolution. When considering living organisms, evolution can be defined as the development of differentiated organisms from less differentiated pre-existing organisms over the course of time. There are many sources, which provide evidence to the theory of evolution.
You're apparently differentiating between daycare and preschool, right? Private preschools (about $500 per month for three days per week, 9:00a to 1:00p) typically have a minimum age of 30 months (2.5 years) and potty-trained.
Three Year Olds. 1  Preschool's naptime is too early for 3-year-old. 2  3 year old has to lie there for 2 hours doing nothing. 3  3 1/2 year old doesn't nap anymore but preschool requires it. 4  Preschool requires naps every day, 3-y-o doesn't. 5  3-year-old not napping at preschool - she needs it.