- Of all the major fertilizer nutrients, nitrogen is the main nutrient affecting soil pH, and soils can become more acidic or more alkaline depending on the type of nitrogen fertilizer used.
Some of the most important factors of social change are as under: Certain geographic changes sometimes produce great social change. Climate, storms, social erosion, earthquakes, floods, droughts etc., definitely affect social life and induce social change. Human life is closely bound up with the geographical conditions of the earth.
The social structure of a society is closely related with the changes in the size, composition and distriÂ­bution of population. The size of the population is based mainly upon three factorsâbirth rate, death rate and migration (immigration and emigration).