Palearctic realm
largest of the Earth's eight biogeographic realms
AI overview
The Palearctic realm is the largest of Earth's eight biogeographic regions, covering much of the Northern Hemisphere including Europe, Asia, and North Africa. It matters because understanding this vast region helps scientists study how plants and animals are distributed across the world's largest land area and how they adapt to its diverse climates and environments.
AI-generated from the Wikipedia summary — may contain errors.
Article
The Palearctic (or Palaearctic) is the world's largest biogeographic realm. Confined almost entirely to the Eastern Hemisphere, it stretches across Europe and Asia, north of the foothills of the Himalayas, and North Africa.
The realm consists of several bioregions: the Mediterranean Basin; North Africa; North Arabia; Western, Central, South and East Asia. The Palaearctic realm also has numerous rivers and lakes, forming several freshwater ecoregions.