Answer:
c) thermal pollution
Explanation:
aka heat pollution, occurs when heat released into water or air produces undesirable effects.
Answer:
migrant diffusion.
Explanation:
Migrant diffusion was the main mechanism by which folk customs spread to popular culture. Folk customs such as sports and music originated in small, limited regions that shared common cultural traits. Its global spread was limited by geographical and environmental barriers, as well as limited technology. Therefore, the main way in which these spread was through migrant diffusion. As people moved away from their places of origin, they took these traditions with them, spreading them to other areas of the world.
The following are the answers:
12. I once asked Red Cloud if he could recall having ever been afraid, and in reply he told me this story. He was about sixteen years old and had already been once or twice upon the warpath, when one fall his people were hunting in the Big Horn country, where they might expect trouble at any moment with the hostile Crows or Shoshones.
13. Red Cloud had followed a single buffalo bull into the Bad Lands and was out of sight and hearing of his companions. When he had brought down his game, he noted carefully every feature of his surroundings so that he might at once detect anything unusual, and tied his horse with a long lariat to the horn of the dead bison, while skinning and cutting up the meat so as to pack it to camp.
14. Every few minutes he paused in his work to scrutinize the landscape, for he had a feeling that danger was not far off.
