system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can you grow a plant hydroponically but if you take the same plant in dirt you can over water it and kill it?
gpt
Plants breathe through their roots. If the soil is wet and the water has no dissolved oxygen in it then the plant will suffocate. 
Hydroponic water has air pumped into it through a bubler system to keep its dissolved oxygen levels up so the plants can breathe.