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 What is aeroponics ?


Aeroponics is the process of growing plants with their roots placed in the nutrient-mist without the use of soil or an aggregate medium. The nutrient necessary for the plant growth are sprayed in the form mist on the roots of the plants. 
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What are haustoria ?

Which ion is most commonly existing as free ion ?

What does 15–15–15, 17–18–19 etc. signify on fertilizer bags ?

Name the nitrifying bacteria in the soil. Why are they called chemoautotrophs ?

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