They prepare the land, spread fertilizers and credit, sow seeds and plant plants.
They take care of the patients and take charge of his well-being.
They discovers a disease and tries to treat it.
They teach a subject, in colleges, institutes and universities.
Take care of cows, porks and sheeps and they take charge of his health.
Sell products and services to the public in general, some of them work in shops.
Go in search of fish, catch them, classify the fish and sell them.
Sellers.
Nurses.
Doctors.
Farmers.
Teachers.
Fisherman.
Ranchers.
