plzzz help me
my homework is all about el nino, la nino. my teacher give me 11 sentence so i have to write with one is el nino, la nino or both

1.weather in u.s. can be affected by changes that occur thousands of kilometer away.

2.winds blowing across the pacific ocean are stronger than normal causing warm water to accumulate in western pacific and cooler water in the eastern pacific.

3. periodic warming and cooling of a huge mass of sea water can impact weather across north america.

4. short-term climate change.

5. south american ocean temperature increase by 1-7 degrees C.

6. normally cold water flowing to the south american coast are replaced by warm tropical waters.

7. normally strong trade winds blowing east to west weaken and reverse.

8. may tigger cooler & drier weather to many parts of the U.S..

9.may cause droughts in southern U.S..

10.Can trigger heavier than normal rainfall across much of the U.S..

11. Can cause severe storms in california

sentence 1. is both because they both near South America, and South America is thousands of kilometers away from the United States

sentence 2. is el nino because el nino forms in the West Pacific

sentence 3. is el nino because el nino starts out warm and the cools down and affects the western coast of North America like California and states like that

sentence 4. is el nino because el nino leaves the climate different for a short period of time, like a year

sentence 5. is la nina because la nina causes temperatures to go down and get colder

sentence 6. is la nina beacuse la nina starts out cold and then when it hits South America, it gets warmer since they have warm water

sentence 7. is el nino because el nino blows east to west, and then when it reverses, it becomes la nina

sentence 8. la nina because la nina is cold and causes cooler temperatures

sentence 9. is el nino because el nino is warm and hot and affects he environment by taking away its moisture and making it dry and hot

sentence 10. is el nino because after an el nino, there is lots of rainfall. especially in California

sentence 11. is el nino because after a el nino, there is lots of rain, which causes severe floods, mudslides and etc.