Explain the meaning of the following terms/words :

(i) Diffusion, (ii) Social change, (iii) Cultural change, (iv) Envinronment.

(i) Diffusion : It is one of the factors of social change. The passing of some traits (aspects) of a particular culture to a second one is called diffusion.

(ii) Social Change means changes in social structure and social relationships of a society. Under social change the changes in family marriage, kinship, economy, politics, age, distribution, birth and death rates of population, etc. are included.

(iii) Cultural Change means changes in the culture of a society, i.e., ideas, knowledge, values, morality, religion, art, etc.

(iv) Environment : Ecology, commonly known as environment.