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Biomes
Term | Definition |
---|---|
tundra | a treeless plain in the arctic regions where the ground is frozen all year long |
grasslands | lands covered with grasses that are good for farming because the soil is so rich in nutrients |
tropical rainforests | abundant rainfall, which makes them very wet environments |
freshwater ecosystems | lakes, ponds, rivers, and streams |
human-caused pollution | spilled oil, pesticides, trash |