Which statement describes the persian empire? choose all answers that are correct a) cyrus oversaw a period of great peace and prosperity throughout his empire b) the persians looked down on the culture and knowledge of the people they conqured c) the empire extended from the eastern edge of europe to the western rim of the indus river valley d) darius conquered all of greece after defeating athens at the battle of marathon

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.