Which of the following describes a situation in which the price of a good would rise?

a. a new technology allows producers to increase supply very quickly.
b. scarce natural resources make it more difficult for producers to keep up with demand.
c. consumers start using less of a good because more substitutes are available.
d. production is increased in order to catch up with a sudden rise in demand.

Scare natural resources make it more difficult for producers to keep up with demand.

Explanation: I got 100% on the test :)

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.

answer; motor learning;