I. Majority of the residents of the housing society participated in the dinner hosted by one of the members of the society. II. Most of the people living in the housing society invite other members for the functions at their house.
(i) A fruit is green when unripe but become beautifully coloured when ripe. How does this change occur ? (ii) What is the importance of this change ? (iii) What is mutualism involved ? (iv) Give an example of such a mutualism in human society.
