Imagine you are in a world filled with beautiful sights and sounds. A gentle wind rushes in your ears, mixing with the brays of bison and chitters of prairie dogs. Grasses rustle in a breeze, their emerald and sulpher stalks swaying gently in the zepyhr. You are in a Temperate Grassland, on an area around Wyoming on the Great Plains. This is just one of the many environments in North America. Murky, mineral-filled waters lap a seaweed littered beach. The sand is soft and wet, and many hermit crabs scurry to get away from the huge, gawky animal that wears its skeleton on the inside. Seagulls hop around, begging for handouts. This is at the Gulf of Mexico. Icy winds blast accross a chilled and lifeless landscape. Every now and then a white rabbit zooms accross the snowy ground, puffs of ice following in its wake. The mournful cry of some bird pierces the air. This is the Canadien Tundra. Biodiversity, it screams at you from all sides. A more common form of dementia, though often it could be pondered that biodiversity is more ethereal than it's mental counterpart. North America is one of the most biologically diverse environments in the world, supporting a wide variety of animals and plants.