10 POINTS! FIRST TO ANSWER CORRECTLY GETS BRAINLIEST! The state of California experiences periodic occurrences of higher than average precipitation. This causes flooding due to heavy rainfall.
Which weather phenomenon most likely causes this and why?
A. La Niña, because of weakening of trade winds
B. El Niño, because of weakening of trade winds
C. El Niño, because of strengthening of trade winds
D. La Niña, because of strengthening of trade winds

Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?