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:
These early. learning designations were used to group activities by goal. The targeted age group for each activity is designated: young. infants (birth to 9 months), mobile infants (8 to 18 months), and. toddlers (16 to 36 months). These overlapping age guidelines. emphasize the ï¬ uidity of early development.