How a City Works (Let's-Read-and-Find-Out Science, Level 2)

Millions of people live in cities around the world, but have you ever wondered how cities work? All those people need clean water to drink, a safe place to live, and a way to get all around the city! How do you take care of all those people’s needs? Your city has a plan for that.

Read and find out all about the systems a city has to help keep everyone safe, healthy, and happy.