Question 4
What is the 5 R principle?
The 5R Principle – Refuse, Reduce, Reuse, Recycle and Recover.
Question 29 What is biomass? Explain the principle and working of a biogas plant using a labelled schematic diagram.
Question 46 Give the basic features of the principle of inheritance.
Question 13
What is the principle underlying the use of cyanobacteria in agricultural fields for crop improvement?