Benzene is a colorless liquid with a sweet odor. It evaporates into the air very quickly and dissolves slightly in water.
In psychology the term, early childhood is usually defined as the time period from the age of two until the age of six or seven years. There are three simultaneous development stages:
For studies of early childhood education interventions for preschool children with disabilities, these settings might be defined by. 1  Location (urban, suburban, or rural) 2  Setting (child care center, school-based prekindergarten, Head Start, other) 3  Type of setting (segregated, inclusive)