HELP PLEASE The development of money led to , as it reduced the opportunity costs of exchange.

Agriculture

Explanation:

The development of money led to agriculture. As it disallowed the barter system in which the goods are exchanged with the goods. The agricultural goods like crops, grains, fibers and other agricultural products were sold on their valuable market prices with the development of currency, its distribution, and utilization in the market.

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.

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