Nana is taking a Spanish final at the end of the spring semester. The problem is that the French vocabulary she learned the semester before keeps getting in the way, causing her to forget Spanish words. Nana is experiencing interference.

The correct answer is :  Proactive interference

Explanation:

It occurs when a person memorizes a list of information,(in this case words), and when trying to remember it later, an earlier memorized part of the information gets in the way interfering with the concepts studied. These past memories hold back someone from retaining new memories.

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.

it's the under parts of the car