This biome's permanently frozen subsoil layer, called permafrost, keeps most trees from taking root.

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Your new ahaTundra

Tundra vegetation is typically low-growing, with few or no trees. Source: Tundra ↗

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04This biome's grasslands and scattered trees host some of the largest land animal migrations on Earth.RECALL
Savanna
The savanna's grasslands and scattered trees host some of the largest land animal migrations on Earth.
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05A highly biodiverse underwater ecosystem built by tiny organisms. Sometimes called the rainforest of the sea.IDENTIFY
Coral Reef
Coral reefs, built by tiny organisms, are so biodiverse they're often called the rainforest of the sea.
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06This biome, also called the boreal forest, is the largest land biome on Earth.RECALL
Taiga
The taiga, also called the boreal forest, is the largest land biome on Earth.
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