What type of front is formed when a warm air mass replaces a cool air mass?

What was the most difficult obstacle to overcome in the creation of an autonomous state after indian independence was achieved? a british willingness to go to war to retain the region b. religious differences between hindus and muslims c. ethnic differences between tribal regions d. indian princes' inability to decide on a format of government

Which of the following statements is most likely a characteristic of an authoritarian government in africa

Plzz on what physical process is responsible for the creation of volcanoes, earthquakes and ocean trenches at the plate margins?