Egg Cell - The female gamete, or sex cell, which carries the hereditary material of the female parent and unites with the male sperm cell during sexual reproduction.⏎
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. ⏎
Encephalitis - Inflammation of the brain, often caused by a virus.⏎
Exoskeleton - An external skeleton that protects and supports an organism, in contrast to an internal endoskeleton.⏎