system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How do the people on Coruscant breath, eat and drink without any nature left?

Also: Why did they destroy all nature? At least something like the parks in New York should be there.
gpt
A gigantic portion of Coruscant's space and air traffic is the infrastructure that imports and distributes off-world food, water, and other resources. A significant amount of the galaxy's trade and business is done on that one planet alone, and a huge amount of it is the simple buying of food. It's one reason the Separatists attacked and blockaded the planet like they did at the end of the clone wars. They would have very quickly starved the Republic's very core if the battle lasted longer than it did. In legends, the Vong also cut off the planet's trade, and it caused death and suffering on an unimaginable scale. 

That being said, Coruscant does have intact ice caps, so it also has significant amounts of native water still present. As well as a few shallow lakes and seas that are either used as farms for sea life, or resorts for tourism and relaxation. There is a single mountain peak that has not been built on, and is the last piece of the planet's visible landmass remaining. 

Coruscant has been the center of trade and politics for well over 10,000 years. In legends, it was upwards of 30,000. Many hyperspace routes have an exit near the planet, which made it a natural trade hub, and the perfect place for meetings and government to form. With an entire galaxy constantly converging on it, infrastructure had to constantly be built to accommodate it. Over the many centuries it had been the galaxy's beating heart, it was turned into a single huge city out of grim necessity. And then it became tradition that no one dared defy, given how many benefits there are to conducting business on that single world. Soon, it was just a way of life that no one questioned.