Historians believe that many ancestors of native americans likely crossed into north america over a land bridge. this bridge was created by they don't have any choices

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.

b) brahmans   is nomadic society