Mullerian mimicry. Unpalatable means not tasty. If an animal (fly) is copying a toxic or unpalatable animal, it must be for survival. If predators know that one animal is unpalatable, the predator would not eat a fly that looks similar to that unpalatable animal.
Answer:
The answer is "Wetter and Warmer weather that increases soil moisture".
Explanation:
During the El Niño event, growers inside the southwestern of the USA often profit from hot weather and much more global warming in moisture in the soil.
Its surface waters were considerably warmer than usual in the eastern Pacific Ocean. Its transition is tightly linked with the atmosphere as well as the winds around the large Pacific.
They have contributed to heating up the environment