AQUATIC: Any place with water. These are salty — oceans, seas,
        
        
          coral reefs, and estuaries (where rivers join seas) — and fresh
        
        
          water — rivers, lakes, ponds, and wetlands.
        
        
          FOREST: Tropical and temperate rainforests. These can be cold taiga
        
        
          forests in the north (also called boreal forests, full of evergreen
        
        
          trees that never lose their leaves) or deciduous forests where the
        
        
          leaves on the trees change color and fall off every year.
        
        
          GRASSLAND: Large flat areas and hills covered with grass and
        
        
          flowers. Plains, savannas, and steppes are all grasslands
        
        
          and are often home to vast herds of roaming animals.
        
        
          DESERT: Dry regions with little rainfall. Usually, deserts are sandy
        
        
          and rocky, but anywhere with scarce rain counts as a desert biome.
        
        
          Antarctica has giant deserts, even though it’s not hot or sandy.
        
        
          TUNDRA: Cold rocky places where there are strong winds and no
        
        
          trees. Only lichen and small shrubs can survive here. The Arctic
        
        
          tundra is found near the North and South poles. Alpine tundra is
        
        
          found all over the world on the tops of high mountains.
        
        
          Let’s take a closer look and see what animals live in each biome.