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:
Infancy. The stage of infancy lasts from birth until approximately the age of 2. During infancy, a great deal of initial learning occurs. This learning is provided through environmental cues, such as a parents behaviour.