Throughout history, which of the following have blocked human settlement in north america? a: mountain ranges b: large lakes and bays c: intricate lakes and waterways d: all of the above

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

Sam hated the long nights of winter! his mother called him in from playing so early: around 4: 30 pm! it is usually dark out when sam is eating supper. what letter represents the long nights where sam lives? a) a. b) b. c) c. d) d.

What is the difference between the formation and characteristics of intrusive igneous rock and extrusive igneous rock?