I took a class in college on Agriculture it was a fun experience learning about plants and animals etc. 
That's cool. Agriculture is the breeding and cultivation of animals, plants, and fungi for food. It is a heavily-researched field.
I suspect they make alot of money because with out the people who study Agriculture we would be lost.
That is correct. In fact agriculture was the key development for the rise in sedentary human civilization. Farming meant we didn't have to travel for food.