Reactions, a video series from the American Chemical Society, traced the steps taken by our bodyâs digestive system to find out that while some of the gum we chew can survive digestion, it doesnât mean the gum you swallowed in grade school is still there.
Ancient Greece was a civilization belonging to a period of Greek history that lasted from the Archaic period of the 8th to 6th centuries BC to the end of antiquity (c. 600 AD).ncluded in ancient Greece is the period of Classical Greece, which flourished during the 5th to 4th centuries BC.
The first plays were performed with just one actor (called a protagonist) and a chorus of people who helped him to tell the story. However, throughout the 5th century BC playwrights continued to innovate. The playwright Aeschylus added a second speaking role, called the antagonist, and reduced the chorus from 50 to 12. His play 'The Persians', first performed in 472 BC, is the oldest surviving of all Greek plays. His pupil, Sophocles went on to add a third actor, while Euripides added both a prologue, introducing the subject of the play, and the deus ex machina, a divine figure who wrapped up any loose ends at the close.