Which statement is true of developing countries? a: there is an abundance of food grown by commercial farmers. b: many face a lack of food, clean water, education, healthcare, and land. c: most people have access to food, healthcare, good housing, technology, and a good education. d: very few people live in developing countries

answer is b.shrapnel

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.