What effects would El Niño most likely have on organisms? Check all that apply. 1)El Niño would lead to the extinction of a species. 2)El Niño would lead to the death of organisms or populations. 3)El Niño would cause changes in the genetic makeup of organisms.4) El Niño would cause continents to move to different parts of the planet. 5)El Niño would cause organisms to move in search of food and better conditions.