The factor that helped the United States in making the inland transportation and commerce to be possible is in letter C. The intricate river system. I hope you are satisfied with my answer and feel free to ask for more if you have clarifications and questions.
Based on this fact, Malaysia is a country with abundant water resources. Streams and rivers with and without impounding reservoirs contribute 98 percent of total water used in Malaysia; the remainder is contributed by groundwater.
Gorges are narrow/skinny valleys between hills or mountains that often have a stream or river running through it. Waterfalls are rivers that stop and drop vertically into another body of water.
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Time distance decay
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Answer: I think this might help you !!!
Explanation:
<h3>Resources are the products of the physical system but they also depend on human ability and need, not by nature. Human beings evaluate the natural environment and classify those substances that provide value to them. Resources are therefore dynamic cultural conceptions.</h3>