Problem: Which British coin was discontinued in 1970?
Answer: half crown

Problem: Silkworms feed mainly on the leaves of what tree?
Answer: mulberry

Problem: Name the ancient civilised region bordered by the two rivers, Tigris and Euphrates?
Answer: mesopotamia

Problem: The men travelling as whose crew were the first known humans to reach and cross the Antarctic Circle in 1773?
Answer:
captain james cook