for school

3. a self-propelled vehicle that runs on rails and is used for moving railroad cars.
5. a person's regular occupation, profession, or trade.
6. the action of buying and selling goods and services.
7. an apparatus using mechanical power and having several parts, each with a definite function and together performing a particular task.
8. the employment of children in an industry or business, especially when illegal or considered
10. an organization made up of members (a membership-based organization) and its membership must be made up mainly of workers.
11. typically cash or liquid assets being held or obtained for expenditures.
12. the difference between revenue that an economic entity has received from its outputs and total costs of its inputs.
13. an amount or section which, when combined with others, makes up the whole of something.
15. the ability of an individual or organization to obtain goods or services before payment, based on an agreement to pay later.
18. an industrial facility, often a complex consisting of several buildings filled with machinery, where workers manufacture items or operate machines which process each item into another.
19. a stock or supply of money, materials, staff, and other assets that can be drawn on by a person or organization in order to function effectively.

1. the process or product which is invented
2. the concentration of human populations into discrete areas.
4. make (something) on a large scale using machinery.
9. the total amount of a specific good or service that is available to consumers.
11. a person who makes profit
14. the desire, willingness and ability of consumers to pay a certain price for a product or service at a given period.
16. limited resource
17. selfish desire for food, money, or possessions over and above one's needs.