The El Niño Phenomenon Refers to Which Natural Pattern on Earth

question 51

Multiple Choice

The El Niño phenomenon refers to which natural pattern on Earth?

• A) Periodic cooling of the equatorial Pacific Ocean surface
• B) Periodic north-south movement of the region of maximum hurricane occurrence track over North America
• C) Slow but apparently continuous rise in overall global temperature over the past century
• D) Periodic warming of the equatorial Pacific Ocean surface

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