Answer:
El Nino and La Nina weather episodes generally lasts from nine to twelve months.
Explanation:
El Nino and La Nina are commonly referred to as weather conditions that following a complex patterns, that results mainly due to variations in temperature of the oceans, especially near the equatorial region of earth. This phenomenon affects the pacific ocean. El Nino is Spanish version of the 'little boy' which mainly denotes the warm phase of the weather characterized by warm water of ocean. Similarly, La Nina means 'the little girl' and is characterized by cold phase of the weather.
