Rodent on every continent except Antarctica. They are the only terrestrial placental mammals to have colonized Australia and New Guinea without human intervention. Humans have also allowed the animals to spread to many remote oceanic islands (e.g., the Polynesian rat). Rodents have adapted to almost every terrestrial habitat, from cold tundra (where they can live under snow) to hot deserts. Some species such as tree squirrels and New World porcupines are arboreal, while some, such as gophers, tuco-tucos, and mole rats, live almost completely underground, where they build complex burrow systems. Others dwell on the surface of the ground, but may
Ganghwa Maehwamarum Habitat protect ecologically important areas by buying the land and protecting it from other commercial acts. Although the Maehwamarum Habitat is small compared to other wetlands, it was designated as Ramsar Wetland for continuous preservation. Plants Animals Introduced Ganghwa Maehwamarum Habitat Ganghwa Maehwamarum Habitat is located at Choji-ri, Gilsang-myun, Ganghwa-gun, Incheon Metropolitan city, South Korea. Maehwamarum ("Ranunculus kazusensis" ) is a plant that grows in a swamp or a lake and it is about 50 cm tall. Until the 1960s, maehwamarum was very abundant and easily seen. However, due to pollution and demolition of ponds and wetlands, it is now found