El Niño-Southern Oscillation Cycle (ENSO) - A combination of two events, El Niño and La Niña, which are periodic disruptions in the ocean’s temperatures. As a result, the temperatures are warmer or cooler than usual, which has an impact on weather patterns worldwide. ⏎
Endemic - The baseline level of disease usually present in a community.⏎
Disease - Any abnormal condition that affects all or part of an organism, resulting in symptoms such as pain or loss of function.⏎
Fertilized Egg - Sometimes referred to as a zygote, this is the resulting initial cell formed when a sperm cell unites with an egg cell.⏎
Ecology - A branch of science that deals with the relation of organisms to one another and their physical environment.⏎