I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

With the help clues provided in the image, can you find the 5 digit key?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

You bought me for dinner but never eat me. What am I?

Which city is three-fifths chick two third cat and 50% goat?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

What country can make you shiver?