the Gulf Stream the jet stream La Niña El Niño
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What is the cause of rising surface temperatures of the Pacific Ocean, drought in the western United States, and flooding on the Pacific coast of South America?
Possibilities:
- the Gulf Stream
- the jet stream
- La Niña
- El Niño

El Niño