1. A vast, flat, treeless Arctic region of Europe, Asia, and North America in which the subsoil is permanently frozen
The tundra is home to polar bears, arctic foxes, and migrating birds.
A tundra é o lar de ursos polares, raposas do ártico e aves migratórias.
2. A type of biome characterized by permafrost, low temperatures, and sparse vegetation
Scientists study climate change effects on tundra ecosystems.
Cientistas estudam os efeitos da mudança climática nos ecossistemas de tundra.