Geography can be understood in five different themes. They are:
• Location
• Place
• Human-Environment Interaction (HEI)
• Movement
• Region
High levels of dissolved oxygen
Explanation:
people migrate to urban areas because
Poor living conditions and the lack of opportunities for paid employment in rural areas are push factors. ... Young people are more likely to move to towns, with more elderly people and children left in rural areas. Selectivity in migration affects the population in both the rural and the urban areas.