Best short medium riddles for teens

I come in many colors and I'm often in a wrap. I am a dentist's trap. Children love to eat me, but they shouldn't have too many. What am I?

I am sweet and tasty, sometimes hard or chewy. I wear a bright paper coat that is noisy and crinkly. Who am I?

Before Mt. Everest was discovered, what was the highest mountain in the world?

You bury me when I am alive, and dig me up when I die. What am I?

When it comes to me, you go on red and stops on green. What am I?

What has many keys but can't open any doors?

What has a tongue, cannot walk, but gets around a lot?

You are in a room with 3 monkeys. One monkey has a banana, one has a stick, and one has nothing. Who is the smartest primate?

There is an ancient invention still used in some parts of the world today that allows people to see through walls. What is it?

In the final stretch of a road race, you pass the 2nd-place runner right before crossing the finish line. What place do you finish in?