all things that are not made by people
nature
someone whose job is to discover information about crimes
detective
one of the separate leaves that form the outer part of a flower head
petal
a hint that helps solve a puzzle, problem, or mystery
clue
an empty space in an object
hole
different, better, or more important than the usual
special
to gather and keep for future use
store
a very large area of sea
ocean
a mark left on the ground by the feet of people or animals
track
a mark made by a person's or animal's foot
footprint
