1. An area or region characterized by extreme environmental conditions, such as very high or low temperatures, high altitude, or harsh weather
Researchers are studying wildlife in extreme zones like the Arctic and Antarctic.
Pesquisadores estão estudando a vida selvagem em zonas extremas como o Ártico e a Antártida.
2. In sports or recreational contexts, a dangerous or high-risk area requiring special skills or equipment
The extreme zone of the mountain is only for experienced climbers.
A zona extrema da montanha é apenas para alpinistas experientes.
3. A boundary or limit area that represents the furthest extent of something
The expedition reached the extreme zones of the rainforest.
A expedição atingiu as zonas extremas da floresta tropical.