Who coined the terms 'spread effects' and 'backwash effects'?

The 'Stop and Go' concept of determinism was proposed by:

Which of the following scholars coined the term 'Geopolitics'?

Who was the proponent of the concept of 'Lebensraum' (living space)?

Which branch of Geography is concerned with the study of population, migration and urbanization?

In which of the following continents are both birth rate and death rate very high?