Logic Riddles

Question: What is 5,000 years old and still turning?

Question: Name two different words using following words only... 1. Without me 60% living beinga cant survive.. 2. Without me none ( living+non-living cant survive... 3. Both have five letters each but both r anagrams of each other..

Question: A shield can reflect projectiles which travel at 4/5 of their original speed after being reflected. A missile is shot towards the shield at 700 km/h. At what speed did it go after its reflection?

Question: What is AD before BC, exams before tests and last year is after last month?

Question: What does a cruise ship, a dead man, and an emu have in common?