What element that is lacking in a diet causes goitre?

More Questions:

In what city was the Wright brothers" bicycle shop?

What trademarked name for inline skates was also its first successful brand name?

What is the longest one syllable word in the English language?

The Ohio River flows into what river?

Which major Australia city does the Fremantle city port serve?

What ore is the primary source of Aluminium?

In Star Trek, what planet is Spock from?

What Joyce Maynard novel was made into a 1995 film, starring Nicole Kidman as a murderous TV weatherperson?

'I’ll be taking these Huggies and whatever cash you got" is a line from what movie?

Helen Mirren won best actress Oscar, beating out Meryl Streep, for which 2006 movie?

Whose first hit single was titled "Stubborn Kind of Fellow"?

Who uttered the line "There is no Soviet domination of Eastern Europe" during a debate?

In 2010, the Deepwater Horizon oil spill polluted the waters of what body of water?

Who did "Time" magazine choose as its Person of the Century in 1999?

What country singer is a collector of sneakers and has 40 pairs of them on the road with him for his Home Team tour?