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:
The Challenge of Early Childhood Assessment. The assessment of young children is very different from the assessment of older. children and adults in several ways. The greatest difference is in the way young. children learn.