Question

Deterrent

to thin out
something which keeps an event from happening
to stimulate, to invite
not able to be eaten
reproduction, as of a plant

Answer 1

or animal
a punishment or threat that discourages someone from doing something
to reduce the number or amount of something by removing some
to cause someone to feel excited or interested in something
inedible; not fit for consumption
the process of creating new individuals of the same kind by sexual or asexual means