system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How does the ISS not run out of food, water or oxygen?

EDIT: you can stop upvoting this now. It was answered at like 4 upvotes. Pls stop. Pls.
gpt
Food is brought dehydrated (so they can bring a lot) water is brought in canisters and oxygen is recycled from water in the astronaut's urine. Oxygen is also brought attached to other elements (for ease of transport) and then separated onboard and released into the station's atmosphere. Everything is brought mostly on the unmanned russian cargo spacecraft "progress" and sometimes on ESA's ATV. Other spacecraft has brought material to the station like JAXA's H-II and some other private spaceflights like dragon and cygnus.