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:
Early childhood is a stage in human development. It generally includes toddlerhood and some time afterwards. Play age is an unspecific designation approximately within the scope of early childhood.