1. Enumerate the advantage of hydroponics.

Explanation

Hydroponics was demonstrated by a German Botanist Julius Von Sachs in 1980
Advantages
Crops can be grown in places where the land is limited, doesn.t exist,or is heavily contaminated.The climate - temperature, humidity, light intensification, the composition of the air can be monitored.
Conservation of water and nutrients.
Controlled plant growth.
No intrusion by weeds.
Fewer pests & diseases
Minimal use of insecticide or herbicides.
In deserts and Arctic regions hydroponics can be effective method.Hydroponics is successfully employed for the commercial production of seedless cucumber and tomato.