Read page no 277 to 279 Learn and write the following 1. Enumerate the advantages of hydroponics. 2. Define mushroom culture. Explain mushroom cultivation methods. 3. Classify the different breeds of cattle with suitable examples. 4. Mention the mushroom preservation methods.. Learn and write the following 1. Mention the mushroom preservation methods. 2. Enumerate the advantages of hydroponics. 3. Define mushroom culture. Explain the mushroom cultivation methods.