What gas is the primary constituent of our atmosphere?

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

What term is given to the border between the central alps and the southern limestone alps?

Which of the following terms describes the layers of air surrounding the earth ?