Misc: What was the name of the eagle that escaped from Regent's Park Zoo in 1965?

Questions

Libra, the Scales, is the only ---------- symbol in the zodiac.?

Life on Earth probably developed in an oxygen-free atmosphere. Even today there are microorganisms that can live only in the absence of---------- .?

Linn's Stamp News is the world's largest weekly newspaper for ---------- collectors. ?

Long ago, the people of ---------- believed that if they threw beautiful young women into a volcano it would stop erupting. ?

Lorne Green had one of his nipples bitten off by an ---------- while host of Lorne Green's Wild Kingdom.?