- 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.
(Answer #1). Social scientists talk about two aspects to people's choice to move from a rural area to an urban area. These aspects are the push factors and the pull factors. Push factors are those that make people want to leave the place where they are living.