Answer:
Hydroponics is a way to skip the soil, sub in a different material to support the roots of the plant, and grow crops directly in nutrient-rich water. There are multiple approaches to designing hydroponic systems, but the core elements are essentially the same.
It's important because up to 90% more efficient use of water. Production increases 3 to 10 times in the same amount of space. Many crops can be produced twice as fast in a well managed hydroponic system.
