Misc: milk, cheese and meat are good sources of which nutrient needed for a healthy diet?

Questions

Woodwind instrument with a double reed mouthpiece?

2002, Crufts - which breed of dog was chosen as Best in Show?

A department within a university or college devoted to a particular branch of knowledge?

The clash of opposing linemen at every down in American Football?

A silvery-white metallic element used in falsh bulbs and foreworks?