Answer:

CITY: Quezon City (You can choose other cities, these answers apply to all)

1. How does it operates? The units of the city  work together for it to function smoothly. When one of these does not function correctly, this can result in a serious problem.

2. Who protects the city? Police Officers: they both control what goes in and out of the city. They also both protect and support what is inside.

3. Who runs the city? Local Government Unit/City Mayor: The city operates by help of the controlling forces in the city.

4. How does the city managed its trash? Garbage Disposal: breaks down wastes and extra materials by disposing them.

5. How does the city get food? Food-Producing Factories/Food Processing Plant : both bring together raw materials. Processes large quantities of food entering the city into smaller packages that can be used more easily.

6. How does the city get its power? Power Plant/Power Company: Produces energy for the city.

7. How do you know when you are in the city limits​? By identifying its boundaries. Apps such as (G) Maps can be used. Type the name of the city, for example, "City of Quezon" and it will outline the city's boundary lines. , some have "holes" where certain areas are not part of the city, but part of the country, so if you live in one of those space, only county rules would apply.

edit:  The (G) in item No. 7 is G0ogle, it seems like I can put it in my answer because the site doesn't allow it.

Hope it helps, co-army! Thanks for supporting the boys. Study well!

ps. let's make Butter a history!