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Explore the 5 Biomes: Forest

The forest biome first began to appear on Earth 420 million years ago, and the first forests were dominated by 40-foot-tall ferns! In the last age of the dinosaurs, the Cretaceous Period, the first flowering plants appeared. Today, forests cover 1/3 of the Earth and come in three climates: Tropical, temperate and boreal (cool and cold