A difficult question or problem that requires thought to solve.
Puzzle
To confuse or make it difficult to understand.
Baffle
Far away from places where people live.
Remote
Very unusual or remarkable.
Extraordinary
A small sign or piece of evidence showing that something existed or happened.
Trace
To find an answer to a problem or mystery.
Solve
Without people living there.
Uninhabited
Not professional; done for enjoyment or as a hobby.
Amateur
A tall building with a light that helps ships navigate at sea.
Lighthouse
A ship that moves using steam power.
Steamship
To cause something to fall.
Knock over
A curved object used for hanging things.
Hook
A mythical giant snake-like creature said to live in the sea.
Sea serpent
To take someone away illegally; usually demanding something in return.
Kidnap
The act of entering a place; especially with an army; to take control.
Invasion
