Agriculture: is the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.

Economics: the branch of knowledge concerned with the production, consumption, and transfer of wealth. It involves making decisions under conditions of scarcity.

Government: the governing body of a nation, state, or community.

Incentive: a thing that motivates or encourages one to do something.

Marginal thinking: consideration of small changes (more or less) rather than total amounts.

Market: A market is a mechanism that allows buyers and sellers of a specific good or service to interact in order to facilitate an exchange.

Opportunity costs: the highest value of a choice surrendered.

Scarcity: a condition when there is not enough to satisfy all wants/needs at a given price.

Trade: the act of buying and selling products, or exchanging products and services through barter.

Trade-off: a balance achieved between two desirable but incompatible features; a compromise.