Question

what is el niño and what part of the sphere does it affect?

Explanation:

El Niño is a climate pattern. It occurs in the equatorial Pacific Ocean when the sea - surface temperatures become warmer than average. It affects the hydrosphere (the water - related part of the Earth system) as it involves oceanic temperature changes, and also the atmosphere as it influences weather patterns globally.

Answer:

El Niño is a climate pattern characterized by warmer - than - average sea - surface temperatures in the equatorial Pacific Ocean. It affects the hydrosphere and the atmosphere.