Answer:The Arctic Circle is one of the two polar circles and the most northerly of the five major circles of latitude as shown on maps of Eart
Explanation:
Answer:
migration is a strong force for equalizing the gene frequencies of sub populations in a species. Provided that the migration rate is greater than zero, gene frequencies will eventually equalize.
Hi there
Facts about the Great Plains
1) They support one of the lowest population densities in the United States
2) Occupy around 500,000 miles of west-central North America
3) Millions of American bison roamed the Great Plains before their near-extermination by market hunters in the late 1800s
4) Through dedicated conservation efforts, bison have made an impressive comeback both on public and private lands.
5) Along wildlife other than bison were pronghorn, elk, mule deer, white-tailed deer, etc.
6) Cast in the rainshadow of the Rockies, the Great Plains harbor the greatest remaining expanses of prairie, a highly-endangered habitat, in the country.
7) While many presume the Great Plains to be relentlessly level, the province actually contains much topographic variety.
8) There are island mountain ranges, especially on the Missouri Plateau---the Bears Paw Mountains, the Sweetgrass Hills, the Black Hills, for example.
9) The Great Plains of interior North America constitute one of the largest grassland expanses in the world
10) For thousands of years, human cultures as varied as the Kiowa, the Blackfeet, the Spanish and the Americans have explored, hunted, settled and fought over these vast spaces.
The division resulted from a peaceful separation.hope this helps
