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.
Best Answer: Preschool typically encompasses a more broad range of ages, from 2 1/2 to 5 years. Not every preschool will include that age span, though - some may have ages 3 to 5, or only ages 4 & 5. A few may also have younger toddlers, but typically not in the same rooms as the older children.