a woman who is a police officer.
a person or a member of a group that works to put out fires.
a person who takes care of the animals in a zoo.
a person who does work without getting paid to do it,they want to help other people.
the head of the government in some countries.
a person who has scientific training and who designs and builds complicated products, machines, systems, or structures.
a person who studies or does research in the science of chemistry.
a person whose job is to teach students.
a person who is trained to give medical care and treatment to animals .