geography

• megacity has 10 mil people
• metacity has 20 mil people
• worldcity is a city which has an international bank
• lidc- low income and developing country
• edc - emerging and developing country
• ac- advanced country
• re -urbanisation people moving back to cities after moving to countryside
• suburbanisation- people moving to the outskirts from the city centres
• urbanisation - moving to city from countryside
• counter-urbanisation - moving to the countryside from the city
• latitude is how far from the equator
• altitude is height of land above sea level