Introduces different plant ecosystems, including forests, grasslands, deserts, and tundra, and describes what life is like in the world's most extreme biomes.

Ecosystems and biomes -- How are plants and their environments organized? -- Forests and grasslands -- Learn about some of the world's most diverse biomes -- Deserts, taigas and the tundra -- Learn about some of the world's most extreme biomes -- In the water -- What does it mean to be a water biome? -- The big truth! -- Explain it -- True statistics.