Which supercontinent forms the core of north america?   a. gondwana  b. pannotia  c. laurentia  d. rodinia

C. Laurentia

Explanation:

within these regions are all the major types of biomes in the world. a biome is a community of animals and plants spreading over an extensive area with a relatively uniform climate. some diverse biomes represented in north america include desert, grassland, tundra, and coral reefs.