They used chasqui(runners) for relaying messages throughout the empire and llamas and alpacas for transporting goods.
Option 4 is the correct answer because the ability to maintain stable internal environment is known as homeostasis. However, the body keeps up (maintains) homeostasis for some factors including temperature. Moreover, water homeostasis in body is maintain through the ingested liquids which basically depends on thirst. The plasma membrane also keeps up (maintain) homeostasis by the regulation of useful materials within the cell.
The correct answer is C
<span>Learn to read and write
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</span><span>Buddhist monasticism is one of the oldest institution in Buddhism. It was used as a learning center. at the monasteries young boys would be taught several things that touched on humanity from science,humanities,and the various aspects of the faith. </span>
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Mountains are particularly important for their biodiversity, water, clean air, research, cultural diversity, leisure, landscape and spiritual values.
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The Transcontinental Railroad was also instrumental in putting thousands of people to work, and also they were instrumental in transporting cattle and resources in much more efficient ways.
