Q37. How to prepare compost?

 

Q38. Why it is not advisable to store cooked food items in plastic bags?

 

Q39. What are the merit and demerit of plastic?

 

Q40. What can we do to minimise over use of plastics and deal with garbage?

 

Q41. How can we make handmade paper?

 


Last modified: Thursday, 3 January 2019, 10:13 PM